240's TX CORE Subjects EC-6 (291): Science Study Guide Is 94% Test-Aligned

240's TX CORE Subjects EC-6 (291): Science study guide is built around the official exam framework so you can study what is actually tested. This page shows exactly how the guide maps to the real exam — SMR by SMR and competency by competency — so you can see where coverage is strongest, where some depth gaps remain, and how each part of the guide supports your prep.

See Full Alignment Details
94%
test-aligned
87
Fully covered
13
Partially covered
0
Coverage gap
Based on a competency-by-competency review of the official framework and the lessons, practice questions, flashcards, videos, and study materials included in this guide.
1756
Practice Questions
729
Flashcards
135
Study Materials
55
Videos

Why Test Alignment Matters for Your TX CORE Subjects EC-6 (291): Science Study Guide

Certification test standards are broad, but the exam questions are very specific. Our team of curriculum experts uses the 240 Study Guide Creation Process to ensure the most aligned, specific content for your TX CORE Subjects EC-6 (291): Science (291) test — so you are not wasting time on broad subject review that may not show up on exam day.

Why 240 Is the Best Choice for the TExES 291 Study Guide
  • ✓Built around the official exam framework
  • ✓Organized by the competencies actually used on the exam
  • ✓Shows exactly what is covered and where depth is partial
  • ✓Includes aligned questions, flashcards, study materials, and videos
  • ✓Helps candidates study what is actually tested instead of broad generic content
Transparent coverage is a strength. We show where the guide is strong, where depth is partial, and where a gap has been identified so you can make an informed study decision.

How to Read This Alignment Review

18 domains · 100 competencies reviewed · 94% test-aligned
Covered— competency is comprehensively supported by the guide
Partially covered— core content is covered, but some depth gaps remain
Coverage gap identified— a content gap has been identified
✓
This study guide is based on the current official exam framework
We review and update alignment whenever the official framework changes so candidates are always studying current, accurate material.
LAB PROCESSES, EQUIPMENT AND SAFETY (DOMAIN 001) Partially covered
111 Qs9 Materials32 Cards3 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands safety regulations and guidelines for science facilities and science instruction. S.Safety Rules Covered 27 1 2 1 Covered by 1 topic (27 questions, 1 materials, 2 cards, 1 videos).
B. Knows procedures for and sources of information regarding the appropriate handling, use, disposal, care and maintenance of chemicals, materials, specimens and equipment. S.Proper Handling - Chemicals Covered 6 1 9 0 Covered by 1 topic (6 questions, 1 materials, 9 cards, 0 videos).
C. Knows procedures for the safe handling and ethical care and treatment of organisms and specimens. S.Proper Handling - Chemicals Covered 6 1 9 0 Covered by 1 topic (6 questions, 1 materials, 9 cards, 0 videos).
D. Selects and safely uses appropriate tools, technologies, materials and equipment needed for instructional activities. S.Proper Tool Use Partially covered 5 1 2 0 Partial coverage by 1 topic (5 questions, 1 materials, 2 cards, 0 videos); limited supporting content.
E. Understands concepts of precision, accuracy and error with regard to reading and recording numerical data from a scientific instrument. S.Precision vs Accuracy; S.Error In Measurements Covered 18 2 6 0 Covered by 2 topics (18 questions, 2 materials, 6 cards, 0 videos).
F. Understands how to gather, organize, display and communicate data in a variety of ways (e.g., charts, tables, graphs, diagrams, written reports, oral presentations). S.Best Chart for the Data Covered 13 1 9 0 Covered by 1 topic (13 questions, 1 materials, 9 cards, 0 videos).
G. Understands the international system of measurement (i.e., metric system) and performs unit conversions within measurement systems, including the use of nonstandard units. M.Converting Units - Proportional Reasoning; S.Metric System; S.Converting Units - Dimensional Analysis Covered 42 3 7 2 Covered by 3 topics (42 questions, 3 materials, 7 cards, 2 videos).
HISTORY AND NATURE OF SCIENCE (DOMAIN 002) Covered
230 Qs17 Materials137 Cards6 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
C. Understands and instructs students in the safe and proper use of a variety of grade-appropriate tools, equipment, resources, technology and techniques to access, gather, store, retrieve, organize and analyze data. S.Proper Tool Use; S.Fostering Scientific Skills Covered 25 2 8 1 Covered by 2 topics (25 questions, 2 materials, 8 cards, 1 videos).
A. Understands, plans, designs and implements instruction that provides opportunities for all students to engage in nonexperimental- and experimental-inquiry investigations. S.Experimental Investigations; S.Non-Experimental Investigations Covered 32 2 11 1 Covered by 2 topics (32 questions, 2 materials, 11 cards, 1 videos).
B. Focuses inquiry-based instruction on questions and issues relevant to students and uses strategies to assist students with generating, refining and focusing scientific questions and hypotheses. S.Scientific Method; S.Inquiry; S.Activities For Inquiry Covered 58 3 20 3 Covered by 3 topics (58 questions, 3 materials, 20 cards, 3 videos).
D. Knows how to guide students in making systematic observations and measurements and posing questions to guide investigations. S.Choose Appropriate Equipment; M.Measurement Principles; M.Choosing Appropriate Units Covered 38 3 33 1 Covered by 3 topics (38 questions, 3 materials, 33 cards, 1 videos).
E. Knows how to promote the use of critical-thinking skills, logical reasoning and scientific problem solving to reach conclusions based on evidence. S.Activities For Critical Thinking Covered 8 1 0 0 Covered by 1 topic (8 questions, 1 materials, 0 cards, 0 videos).
F. Knows how to teach students to develop, analyze and evaluate different explanations for a given scientific result, including that repeated investigations may increase reliability. S.Repeatability Covered 13 1 1 0 Covered by 1 topic (13 questions, 1 materials, 1 cards, 0 videos).
J. Understands the roles that logical reasoning, verifiable evidence, prediction and peer review play in the process of generating and evaluating scientific knowledge. S.Repeatability Covered 13 1 1 0 Covered by 1 topic (13 questions, 1 materials, 1 cards, 0 videos).
G. Knows how to teach students to demonstrate an understanding of potential sources of error in inquiry-based investigation. S.Error In Measurements Covered 11 1 4 0 Covered by 1 topic (11 questions, 1 materials, 4 cards, 0 videos).
H. Knows how to teach students to demonstrate an understanding of how to communicate and defend the results of an inquiry-based investigation. S.Best Chart for the Data Covered 13 1 9 0 Covered by 1 topic (13 questions, 1 materials, 9 cards, 0 videos).
I. Understands principles of scientific ethics. S.Ethics Covered 10 1 0 0 Covered by 1 topic (10 questions, 1 materials, 0 cards, 0 videos).
K. Understands the historical development of science (e.g., cell theory, plate tectonics, laws of motion, universal gravity) and technology and the contributions that diverse cultures and individuals of both genders have made to scientific and technological knowledge. S.Key History of Science; S.Diversity in Science History Covered 22 2 60 0 Covered by 2 topics (22 questions, 2 materials, 60 cards, 0 videos).
IMPACT OF SCIENCE (DOMAIN 003) Covered
73 Qs5 Materials7 Cards1 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands that decisions about the use of science are based on factors such as ethical standards, economics and personal and societal needs. S.Ethics Covered 10 1 0 0 Covered by 1 topic (10 questions, 1 materials, 0 cards, 0 videos).
B. Applies scientific principles to analyze the advantages of, disadvantages of or alternatives to a given decision or course of action. S.Decision Making Covered 10 1 1 0 Covered by 1 topic (10 questions, 1 materials, 1 cards, 0 videos).
C. Applies scientific principles and processes to analyze factors that influence personal choices concerning fitness and health, including physiological and psychological effects and risks associated with the use of substances and substance abuse. S.Healthy and Unhealthy Lifestyles Covered 16 1 0 0 Covered by 1 topic (16 questions, 1 materials, 0 cards, 0 videos).
D. Understands concepts, characteristics and issues related to changes in populations and human population growth. S.Human Populations Impact the Earth Covered 20 1 3 0 Covered by 1 topic (20 questions, 1 materials, 3 cards, 0 videos).
E. Identifies and understands the types and uses of natural resources and the effects of human consumption on the renewal and depletion of resources. S.Renewable vs Nonrenewable Covered 17 1 4 1 Covered by 1 topic (17 questions, 1 materials, 4 cards, 1 videos).
F. Understands the role science and scientists can play in helping resolve personal, societal and global challenges. S.Decision Making Covered 10 1 1 0 Covered by 1 topic (10 questions, 1 materials, 1 cards, 0 videos).
CONCEPTS AND PROCESSES (DOMAIN 004) Covered
82 Qs7 Materials23 Cards1 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands how a unifying, explanatory framework across the science disciplines is provided by the concepts and processes of systems, order and organization; evidence, models and explanation; change, constancy and measurements; and form and function. S.Properties of Systems; S.Form and Function; S.Change, Constancy, and Measurements; S.Evidence, Models, and Explanation Covered 47 4 10 0 Covered by 4 topics (47 questions, 4 materials, 10 cards, 0 videos).
B. Demonstrates an understanding of how patterns in observations and data can be used to make explanations and predictions. S.Prediction, Explanation, Theory, Fact Covered 7 1 5 1 Covered by 1 topic (7 questions, 1 materials, 5 cards, 1 videos).
C. Analyzes interactions and interrelationships between systems and subsystems. S.Change In Systems Covered 15 1 5 0 Covered by 1 topic (15 questions, 1 materials, 5 cards, 0 videos).
D. Applies unifying concepts to explore similarities in a variety of natural phenomena. S.Evidence, Models, and Explanation Covered 12 1 2 0 Covered by 1 topic (12 questions, 1 materials, 2 cards, 0 videos).
E. Understands how properties and patterns of systems can be described in terms of space, time, energy and matter. S.Properties of Systems Covered 12 1 5 0 Covered by 1 topic (12 questions, 1 materials, 5 cards, 0 videos).
F. Understands how change and constancy occur in systems. S.Change In Systems; S.Change, Constancy, and Measurements Covered 26 2 6 0 Covered by 2 topics (26 questions, 2 materials, 6 cards, 0 videos).
G. Understands the complementary nature of form and function in a given system. S.Form and Function Covered 12 1 2 0 Covered by 1 topic (12 questions, 1 materials, 2 cards, 0 videos).
H. Understands how models are used to represent the natural world and how to evaluate the strengths and limitations of a variety of scientific models (e.g., physical, conceptual, mathematical). S.Models Covered 13 1 4 0 Covered by 1 topic (13 questions, 1 materials, 4 cards, 0 videos).
STUDENTS AS LEARNERS AND SCIENCE INSTRUCTION (DOMAIN 005) Partially covered
89 Qs10 Materials30 Cards4 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands how developmental characteristics, prior knowledge and experience and students’ attitudes influence science learning. S.Differentiation Partially covered 6 1 3 0 Partial coverage by 1 topic (6 questions, 1 materials, 3 cards, 0 videos); limited supporting content.
H. Understands how to sequence learning activities in a way that enables students to build on their prior knowledge and that challenges them to expand their understanding of science. S.Differentiation Partially covered 6 1 3 0 Partial coverage by 1 topic (6 questions, 1 materials, 3 cards, 0 videos); limited supporting content.
B. Selects and adapts science curricula, content, instructional materials, collaborations, vocabulary and activities to meet the levels of interest, knowledge and understanding as well as the abilities, experiences and needs of all students, including English-language learners. S.Differentiation; S.ELL; S.E Guidelines and TEKS Covered 10 3 5 0 Covered by 3 topics (10 questions, 3 materials, 5 cards, 0 videos).
C. Understands how to use situations from students’ daily lives to develop instructional materials that investigate how science can be used to make informed decisions. S.Engagement; S.Engagement - 5E Model TX Covered 24 2 12 1 Covered by 2 topics (24 questions, 2 materials, 12 cards, 1 videos).
D. Understands common misconceptions in science and has effective ways to address those misconceptions. S.Misconceptions Covered 14 1 2 1 Covered by 1 topic (14 questions, 1 materials, 2 cards, 1 videos).
E. Understands developmentally appropriate design and implementation of hands-on learning experiences in science and selects effective, appropriate instructional practices, activities, technologies and materials to promote students’ scientific knowledge, skills and inquiry processes. S.Inquiry; S.Integrating Digital Technology Covered 30 2 12 2 Covered by 2 topics (30 questions, 2 materials, 12 cards, 2 videos).
F. Understands questioning strategies designed to elicit higher-level thinking and how to use them to move students from concrete to more abstract understanding. S.Critical Thinking Partially covered 6 1 1 0 Partial coverage by 1 topic (6 questions, 1 materials, 1 cards, 0 videos); limited supporting content.
G. Understands the importance of planning activities that are inclusive and that accommodate the needs of all students. S.Diversity Partially covered 5 1 0 0 Partial coverage by 1 topic (5 questions, 1 materials, 0 cards, 0 videos); limited supporting content.
SCIENCE ASSESSMENT (DOMAIN 006) Partially covered
49 Qs2 Materials8 Cards1 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands the relationships between a science curriculum, assessment and instruction and bases instruction on information gathered through assessment of students’ strengths and needs. S.Assessment and Instruction - Science Covered 42 1 6 1 Covered by 1 topic (42 questions, 1 materials, 6 cards, 1 videos).
B. Understands the importance of monitoring and assessing students’ understanding of science concepts and skills on an ongoing basis, including how to use formal and informal assessments of student performance and how to use products (e.g., projects, lab journals, rubrics, portfolios, student profiles, checklists) to evaluate students’ understanding of and participation in the inquiry process. S.Assessment and Instruction - Science; S.Rubrics in Assessment Covered 49 2 8 1 Covered by 2 topics (49 questions, 2 materials, 8 cards, 1 videos).
C. Selects — or designs — and administers a variety of appropriate assessments (e.g., performance assessment, self-assessment, formal/informal assessment, formative/summative assessment) to monitor students’ understanding and progress and to plan for instruction. S.Assessment and Instruction - Science Covered 42 1 6 1 Covered by 1 topic (42 questions, 1 materials, 6 cards, 1 videos).
D. Understands the importance of communicating evaluation criteria and assessment results to students. S.Rubrics in Assessment Partially covered 7 1 2 0 Partial coverage by 1 topic (7 questions, 1 materials, 2 cards, 0 videos); limited supporting content.
FORCES AND MOTION (DOMAIN 007) Covered
100 Qs7 Materials38 Cards3 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Demonstrates an understanding of the properties of universal forces (e.g., gravitational, electrical, magnetic). S.Gravity; S.Electromagnetic Forces; S.Force and Newton's Laws Covered 47 3 13 1 Covered by 3 topics (47 questions, 3 materials, 13 cards, 1 videos).
B. Understands how to measure, graph and describe changes in motion by using concepts of position, direction of motion and speed. S.Motion Terms; S.Motion Graphs Covered 38 2 11 2 Covered by 2 topics (38 questions, 2 materials, 11 cards, 2 videos).
C. Analyzes the ways unbalanced forces acting on an object cause changes in the position or motion of the object. S.Force and Newton's Laws Covered 29 1 12 1 Covered by 1 topic (29 questions, 1 materials, 12 cards, 1 videos).
D. Analyzes the relationship between force and motion in a variety of situations (e.g., simple machines, geologic processes). S.Simple Machines - Basic; S.Geological Processes and Force Covered 15 2 15 0 Covered by 2 topics (15 questions, 2 materials, 15 cards, 0 videos).
PHYSICAL AND CHEMICAL PROPERTIES (DOMAIN 008) Covered
122 Qs12 Materials72 Cards6 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Describes and measures the physical and chemical properties of substances (e.g., size, shape, temperature, magnetism, hardness, mass, conduction, density). S.Physical Properties; S.Chemical Properties; S.Electrical Conductor vs Insulator; S.Thermal Conductor vs Insulator Covered 31 4 41 2 Covered by 4 topics (31 questions, 4 materials, 41 cards, 2 videos).
B. Describes the physical properties of solids, liquids and gases. S.States of Matter Covered 11 1 3 1 Covered by 1 topic (11 questions, 1 materials, 3 cards, 1 videos).
D. Applies knowledge of physical and chemical properties (including atomic structure) of and changes in matter to processes and situations that occur in life and in earth and space science. S.Parts of an Atom; S.Atoms and Molecules; S.Physical Properties; S.Applications of Physical and Chemical Properties Covered 36 4 35 1 Covered by 4 topics (36 questions, 4 materials, 35 cards, 1 videos).
E. Distinguishes between elements, compounds, mixtures and solutions and describes their properties. S.Elements and Compounds; S.Mixtures and Solutions Covered 24 2 10 1 Covered by 2 topics (24 questions, 2 materials, 10 cards, 1 videos).
C. Distinguishes between physical and chemical changes in matter. S.Chemical vs Physical Changes; S.Conservation of Matter and Energy Covered 30 2 6 1 Covered by 2 topics (30 questions, 2 materials, 6 cards, 1 videos).
F. Describes and explains the occurrence and importance of a variety of chemical reactions that occur in daily life (e.g., rusting, burning of fossil fuels, photosynthesis, cell respiration, chemical batteries, digestion of food). S.Chemical vs Physical Changes Covered 18 1 4 1 Covered by 1 topic (18 questions, 1 materials, 4 cards, 1 videos).
ENERGY AND INTERACTIONS (DOMAIN 009) Covered
165 Qs10 Materials66 Cards3 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands conservation of energy and energy transformations and analyzes how energy is transformed from one form to another (e.g., potential, kinetic, mechanical, sound, heat, light, chemical, electrical) in a variety of everyday situations and how increasing or decreasing amounts affect objects. S.Types of Energy; S.Conservation of Energy Calculations Covered 37 2 9 1 Covered by 2 topics (37 questions, 2 materials, 9 cards, 1 videos).
B. Understands the basic concepts of heat energy and related processes (e.g., melting, evaporation, boiling, condensation, conduction, convection, and radiation). S.Conduction, Convection, and Radiation; S.Phase Changes Covered 37 2 11 2 Covered by 2 topics (37 questions, 2 materials, 11 cards, 2 videos).
C. Understands the principles of electricity and magnetism and their applications (e.g., electric circuits, electromagnetic fields, motors, audio speakers, lightning). S.Electricity and Magnetism; S.Circuits Covered 34 2 22 0 Covered by 2 topics (34 questions, 2 materials, 22 cards, 0 videos).
D. Applies knowledge of properties of light (e.g., reflection, refraction) to describe the functioning of optical systems and phenomena (e.g., camera, microscope, rainbow, eye). S.Light; S.Reflection and Refraction; S.Applications of Waves - Optical Technologies Covered 25 3 15 0 Covered by 3 topics (25 questions, 3 materials, 15 cards, 0 videos).
E. Demonstrates an understanding of the properties, production, and transmission of sound. S.Sound Covered 32 1 9 0 Covered by 1 topic (32 questions, 1 materials, 9 cards, 0 videos).
ENERGY TRANSFORMATIONS AND CONSERVATION (DOMAIN 010) Partially covered
17 Qs3 Materials17 Cards0 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Describes sources of electrical energy and processes of energy transformation for human uses (e.g., fossil fuels, solar panels, hydroelectric plants). S.Types of Energy Transfers By Humans Covered 7 1 14 0 Covered by 1 topic (7 questions, 1 materials, 14 cards, 0 videos).
B. Applies knowledge of transfer of energy in a variety of situations (e.g., the production of heat, light, sound and magnetic effects by electrical energy; the process of photosynthesis; weather processes; food webs; food and energy pyramids). S.Types of Energy Transfers in Ecology Partially covered 6 1 1 0 Partial coverage by 1 topic (6 questions, 1 materials, 1 cards, 0 videos); limited supporting content.
C. Understands applications of energy transformations and the conservation of matter and energy in life and in earth and space science. S.Types of Energy Transfers in Space Partially covered 4 1 2 0 Partial coverage by 1 topic (4 questions, 1 materials, 2 cards, 0 videos); limited supporting content.
STRUCTURE AND FUNCTION OF LIVING THINGS (DOMAIN 011) Covered
132 Qs9 Materials64 Cards6 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
C. Understands that organisms have basic needs. S.Requirements of Life Covered 10 1 5 1 Covered by 1 topic (10 questions, 1 materials, 5 cards, 1 videos).
A. Understands that living systems have different structures that perform different functions. S.Cells, Tissues, Organs, Organ Systems Covered 11 1 6 1 Covered by 1 topic (11 questions, 1 materials, 6 cards, 1 videos).
E. Identifies human body systems and describes their functions. S.Human Body Systems Covered 25 1 11 1 Covered by 1 topic (25 questions, 1 materials, 11 cards, 1 videos).
D. Analyzes how structure complements function in cells, tissues, organs, organ systems and organisms. S.Parts of the Cell Covered 27 1 14 1 Covered by 1 topic (27 questions, 1 materials, 14 cards, 1 videos).
F. Understands the relationship between characteristics, structures, and functions and corresponding taxonomic classifications. S.Eukaryotic vs Prokaryotic; S.Major Groups of Eukaryotic Life Covered 44 2 25 1 Covered by 2 topics (44 questions, 2 materials, 25 cards, 1 videos).
B. Understands and describes stages in the life cycles of common plants and animals (including animals that experience complete and incomplete metamorphosis). S.Growth and Development; S.Plant Growth; S.Metamorphosis Covered 15 3 5 1 Covered by 3 topics (15 questions, 3 materials, 5 cards, 1 videos).
REPRODUCTION AND THE MECHANISMS OF HEREDITY (DOMAIN 012) Partially covered
85 Qs8 Materials31 Cards2 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Describes the processes by which plants and animals reproduce and explains how hereditary information is passed from one generation to the next. S.Asexual Reproduction; S.Sexual Reproduction; S.Somatic vs Sex Cells Covered 30 3 14 0 Covered by 3 topics (30 questions, 3 materials, 14 cards, 0 videos).
B. Compares and contrasts inherited traits and learned characteristics. S.Learned vs Inherited Covered 9 1 5 0 Covered by 1 topic (9 questions, 1 materials, 5 cards, 0 videos).
C. Understands the organization of hereditary material and how an inherited trait can be determined by one or many genes and how more than one trait can be influenced by a single gene. S.Structure of DNA and RNA Covered 12 1 3 0 Covered by 1 topic (12 questions, 1 materials, 3 cards, 0 videos).
D. Distinguishes between dominant and recessive traits and predicts the probable outcomes of genetic combinations. S.Dominant vs Recessive; S.Punnett Squares Covered 32 2 9 2 Covered by 2 topics (32 questions, 2 materials, 9 cards, 2 videos).
E. Evaluates the influence of environmental and genetic factors on the traits of an organism. S.Environmental vs Genetic Partially covered 2 1 0 0 Partial coverage by 1 topic (2 questions, 1 materials, 0 cards, 0 videos); limited supporting content.
ADAPTATIONS AND EVOLUTION (DOMAIN 013) Covered
55 Qs5 Materials13 Cards2 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Demonstrates knowledge of adaptive characteristics and explains how adaptations influence the survival of populations or species. S.Adaptations Covered 14 1 3 1 Covered by 1 topic (14 questions, 1 materials, 3 cards, 1 videos).
B. Describes how populations and species change through time. S.Populations Change (Not Individuals) Covered 10 1 5 0 Covered by 1 topic (10 questions, 1 materials, 5 cards, 0 videos).
C. Describes processes that enable traits to change through time, including selective breeding, mutation and other natural occurrences. S.Mutations; S.Natural Selection; S.Artificial Selection Covered 31 3 6 1 Covered by 3 topics (31 questions, 3 materials, 6 cards, 1 videos).
ORGANISMS AND THE ENVIRONMENT (DOMAIN 014) Partially covered
130 Qs11 Materials50 Cards7 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands that organisms respond to internal or external stimuli and analyzes the role of internal and external stimuli in the behavior of organisms. S.Stimuli; S.Homeostasis Covered 23 2 5 1 Covered by 2 topics (23 questions, 2 materials, 5 cards, 1 videos).
B. Understands relationships between organisms and the environment and describes ways that living organisms depend on each other and on the environment to meet their basic needs. S.Types of Relationships; S.Environment as a Pressure Covered 22 2 6 1 Covered by 2 topics (22 questions, 2 materials, 6 cards, 1 videos).
C. Identifies organisms, populations or species with similar needs and analyzes how they compete with one another for resources. S.Ecological Organization; S.Competition Covered 19 2 14 2 Covered by 2 topics (19 questions, 2 materials, 14 cards, 2 videos).
D. Analyzes the interrelationships and interdependence among producers, consumers and decomposers in an ecosystem (e.g., food webs, food chains, competition, predation). S.Roles In Food Chain; S.Food Webs; S.Wildlife Impact on Ecosystems Covered 47 3 17 2 Covered by 3 topics (47 questions, 3 materials, 17 cards, 2 videos).
E. Identifies factors that influence the size and growth of populations in an ecosystem. S.Growth Factors Covered 12 1 6 1 Covered by 1 topic (12 questions, 1 materials, 6 cards, 1 videos).
F. Analyzes adaptive characteristics that result in a population’s or species’ unique niche in an ecosystem. S.Habitats and Niches Partially covered 7 1 3 0 Partial coverage by 1 topic (7 questions, 1 materials, 3 cards, 0 videos); limited supporting content.
G. Knows how populations and species modify and affect ecosystems. S.Wildlife Impact on Ecosystems Partially covered 6 1 2 0 Partial coverage by 1 topic (6 questions, 1 materials, 2 cards, 0 videos); limited supporting content.
STRUCTURE AND FUNCTION OF EARTH SYSTEMS (DOMAIN 016) Covered
109 Qs7 Materials46 Cards4 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
E. Understands and describes the properties and uses of Earth materials (e.g., rocks, soils, water, atmospheric gases). S.Properties of Rocks and Minerals; S.Soil Covered 29 2 22 0 Covered by 2 topics (29 questions, 2 materials, 22 cards, 0 videos).
A. Understands the rock cycle and how rocks, minerals and soils are formed, and their respective properties. S.Rock Cycle Covered 24 1 8 1 Covered by 1 topic (24 questions, 1 materials, 8 cards, 1 videos).
B. Understands the water cycle and its relationship to weather processes. S.Water Cycle Covered 20 1 9 1 Covered by 1 topic (20 questions, 1 materials, 9 cards, 1 videos).
C. Understands the nutrient (e.g., carbon, nitrogen) cycle and its relationship to Earth systems. S.Carbon Cycle; S.Nitrogen Cycle Covered 27 2 9 2 Covered by 2 topics (27 questions, 2 materials, 9 cards, 2 videos).
D. Applies knowledge of how human and natural processes affect Earth systems. S.Human Influences on Climate Covered 9 1 4 0 Covered by 1 topic (9 questions, 1 materials, 4 cards, 0 videos).
STRUCTURE AND FUNCTION OF EARTH SYSTEMS (DOMAIN 015) Covered
115 Qs7 Materials55 Cards3 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands the structure of Earth and analyzes constructive and destructive processes (including plate tectonics, weathering and erosion) that produce geologic change, including how these processes have affected Earth history. S.Structures of Earth; S.Constructive and Destructive Processes; S.Earth's History Covered 54 3 34 2 Covered by 3 topics (54 questions, 3 materials, 34 cards, 2 videos).
B. Understands the form and function of surface water and groundwater. S.Surface Water vs Groundwater Covered 9 1 4 0 Covered by 1 topic (9 questions, 1 materials, 4 cards, 0 videos).
C. Applies knowledge of the composition and structure of the atmosphere and its properties. S.Composition and Layers of the Atmosphere Covered 20 1 12 1 Covered by 1 topic (20 questions, 1 materials, 12 cards, 1 videos).
D. Applies knowledge of how human activity and natural processes, both gradual and catastrophic, can alter Earth systems. S.Effects of Natural Phenomena on Climate; S.Global Warming Covered 32 2 5 0 Covered by 2 topics (32 questions, 2 materials, 5 cards, 0 videos).
ENERGY IN WEATHER AND CLIMATE (DOMAIN 017) Partially covered
56 Qs5 Materials34 Cards2 VideosPartially covered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands the elements of weather (e.g., humidity, wind speed and direction, air pressure, temperature) and the tools used for measurement. S.Air Masses and Ocean Currents; S.Weather Tools Covered 26 2 19 0 Covered by 2 topics (26 questions, 2 materials, 19 cards, 0 videos).
B. Compares and contrasts weather and climate. S.Weather vs Climate Covered 11 1 7 1 Covered by 1 topic (11 questions, 1 materials, 7 cards, 1 videos).
C. Analyzes weather charts and data to make weather predictions. S.Weather Charts Covered 13 1 7 0 Covered by 1 topic (13 questions, 1 materials, 7 cards, 0 videos).
D. Applies knowledge of how transfers of energy between Earth systems affect weather and climate. S.Uneven Heating of Earth Partially covered 6 1 2 1 Partial coverage by 1 topic (6 questions, 1 materials, 2 cards, 1 videos); limited supporting content.
E. Analyzes how Earth’s position, orientation, and surface features affect weather and climate. S.Uneven Heating of Earth Partially covered 6 1 2 1 Partial coverage by 1 topic (6 questions, 1 materials, 2 cards, 1 videos); limited supporting content.
SOLAR SYSTEM AND THE UNIVERSE (DOMAIN 018) Covered
97 Qs6 Materials77 Cards2 VideosCovered
Official CompetencyMatching 240 TopicsAlignmentQsMatsCardsVidsNotes
A. Understands the properties and characteristics of objects in the sky. S.Properties of Celestial Bodies Covered 6 1 21 0 Covered by 1 topic (6 questions, 1 materials, 21 cards, 0 videos).
B. Applies knowledge of the Earth–Moon–Sun system and the interactions among them (e.g., day and night, seasons, lunar phases, eclipses). S.Night/Day and Time Zones; S.Seasons; S.Lunar Cycle; S.Eclipses Covered 70 4 33 2 Covered by 4 topics (70 questions, 4 materials, 33 cards, 2 videos).
C. Identifies properties of the components of the solar system. S.Components of the Solar System Covered 21 1 30 0 Covered by 1 topic (21 questions, 1 materials, 30 cards, 0 videos).

How 240 Creates The TX CORE Subjects EC-6 (291): Science (291) Study Guide

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Every 240 study guide starts with the official exam framework. From there, we organize lessons, practice, and study tools around the categories the exam uses to measure candidate knowledge.

1
Review the official exam framework
We begin with the standards, domains, competencies, objectives, or content categories published by the testing authority.
2
Map the tested categories
We map every major area the exam is designed to cover so the guide reflects the real structure of the test.
3
Build lessons around tested content
We create study materials to support the official blueprint, not broad filler content.
4
Cross-check practice against exam expectations
We review practice content against the framework and real exam patterns so preparation stays targeted.
5
Review and update as standards change
When official frameworks change, we review guides and update alignment as needed.

Reviewed by subject-matter experts and maintained to reflect current standards.

Built By Teachers for Teachers

You're not on this journey alone. Our 240 teachers have firsthand experience with these exams. Real teachers with real experience are behind the scenes to help guide you into the classroom where YOU belong.

Samantha

Former NJ & Texas Teacher

Curriculum Specialist for 240

Tess

Former Illinois Teacher

Curriculum Coordinator for 240

Dakota

Former Texas Teacher

Curriculum Specialist for 240

Abigail

Former Arizona & Illinois Teacher

Curriculum Coordinator for 240

Katy

Former Texas Teacher

Curriculum Writer for 240

Blair

Former Texas Teacher

Curriculum Writer for 240

Brooke

Former Idaho teacher

Curriculum Writer for 240

Hannah

Former Minnesota Teacher

Curriculum Writer for 240

Why 240 Is Better Than Other Generic Study Guides

Not all study guides are built the same way. Here is what separates a test-aligned guide from a generic one — and why it matters when you are preparing for the TX CORE Subjects EC-6 (291): Science.

Generic
Generic Prep
✕Covers broad subject areas without structure
✕No clear connection to the official exam framework
✕Practice questions may not reflect the real test format
✕May not update when official standards change
~Can be helpful for quick, broad review
Test-aligned
240 Test-Aligned TExES 291 Prep
✓Every lesson maps to an official domain or competency
✓Built directly from the official exam framework
✓Practice questions aligned to what the exam actually measures
✓A clear study path by tested category
✓Study smarter and enter test day more prepared

FAQs About the TX CORE Subjects EC-6 (291): Science Study Guide

The questions teacher candidates ask us most often about the TX CORE Subjects EC-6 (291): Science study guide.

1
Is 240 a good study guide for TX CORE Subjects EC-6 (291): Science?
240 is a strong option because the guide is built around the official exam framework and shows detailed alignment by SMR and competency.
2
How closely does 240 align to the TExES 291 exam?
This guide is 94% aligned based on a competency-by-competency review of the official framework and the study resources included in the guide.
3
Does 240 cover every competency?
This page shows coverage transparently across covered, partially covered, and identified gaps so candidates can see exactly how the guide maps to the exam.
4
What does “partially covered” mean?
Partially covered means the guide addresses the core parts of a competency, but some depth or subtopics may still be limited.

Study What's Actually on the TExES 291 Exam

Start with a study guide built around the real exam. 240's guide maps lessons and study tools to official competencies so you can prepare more efficiently and more confidently.