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How to learn Grade 3: Science

Texas Essential Knowledge and Skills: Science, Grade 3

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1. The student knows that organisms undergo similar life processes and have structures that function to help them survive within their environments. The student is expected to:

  1. Life Cycles of Organisms: Develop models to describe that organisms have unique and diverse life cycles but all share the common stages of birth, growth, reproduction, and death
  2. Structures for Survival: Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behaviour, and reproduction

2. The student describes patterns, cycles, systems, and relationships within environments. The student is expected to:

  1. Fossils as Evidence: Analyse and interpret data from fossils to provide evidence of organisms and environments that existed long ago
  2. Changing Environments: Recognise that environments can change and that this can sometimes pose dangers and challenges to living things
  3. Food Chains & Energy Transfer: Construct and interpret food chains identifying producers, predators, and prey, and understand energy transfer between trophic levels
  4. How animals adapt to environments: Identify how animals and plants are adapted to suit their environment and understand that adaptation may lead to evolution over time

3. The student understands how natural resources are important and can be managed. The student is expected to:

  1. Natural resources: Obtain and combine information to describe that energy and fuels are derived from natural resources and that their uses affect the environment

4. The student knows that there are recognizable processes that change Earth over time. The student is expected to:

  1. Rapid earth changes: Use information from several sources to provide evidence that Earth events can occur quickly (earthquakes, volcanic eruptions) or slowly (erosion, mountain building)
  2. Rocks and soil: Recognise that soils are made from rocks and organic matter, and that different soils have different properties
  3. Weather vs climate: Obtain and combine information to describe climates in different regions of the world, distinguishing between weather and climate

5. The student knows there are recognizable objects and patterns in Earth's solar system. The student is expected to:

  1. Naming the Planets: Name the planets in our solar system in order from the Sun and use vocabulary for space — planet, star, sun, moon, satellite, orbit, solar system, galaxy, universe, asteroid, comet — applying these correctly when describing the structure of the solar system and objects we see in the sky
  2. The solar system: Describe the sun, Earth, and moon as approximately spherical bodies, and describe the movement of the Earth and other planets orbiting the sun in the solar system

6. The student knows that energy is everywhere and can be observed in cycles, patterns, and systems. The student is expected to:

  1. Speed and energy: Use evidence to construct an explanation relating the speed of an object to the energy of that object
  2. How energy travels around: Observe and provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currents

7. The student knows the nature of forces and the patterns of their interactions. The student is expected to:

  1. Pushes & Pulls: Understand that pushes and pulls are forces that can change the speed or direction of an object's motion, and compare the effects of different strengths and directions
  2. Forces Vocabulary: Name and describe forces using precise vocabulary — force, push, pull, twist, stretch, squash, contact force, non-contact force, gravity, weight, friction, air resistance, upthrust — and distinguish between forces that require physical contact and forces that act at a distance

8. The student knows that matter has measurable physical properties that determine how matter is identified, classified, changed, and used. The student is expected to:

  1. Classifying Materials: Plan and conduct an investigation to classify different kinds of materials by their observable properties
  2. Heating & Cooling Changes: Observe and describe that some materials change state when heated or cooled, and measure the temperature at which changes occur in degrees Celsius
  3. Solids, Liquids & Gases: Compare and group materials as solids, liquids, or gases based on their observable properties and behaviour

9. The student understands that recurring themes and concepts provide a framework for making connections across disciplines. The student is expected to:

  1. Drawing conclusions from evidence (age 9+): Report and present findings including conclusions, causal relationships, explanations, and a degree of trust in results using oral and written forms
  2. Using evidence to answer questions: Identify differences, similarities, or changes related to scientific ideas and use straightforward scientific evidence to answer questions or support findings

10. The student knows the contributions of scientists and recognizes the importance of scientific research and innovation for society. The student is expected to:

  1. Drawing conclusions from evidence: Report on findings from enquiries using oral and written explanations, draw simple conclusions, make predictions, and suggest improvements

11. The student analyzes and interprets data to derive meaning, identify features and patterns, and discover relationships or correlations to develop evidence-based arguments or evaluate designs. The stud

  1. Comparing Design Solutions: Analyse data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of each design

12. The student asks questions, identifies problems, and plans and safely conducts classroom, laboratory, and field investigations to answer questions, explain phenomena, or design solutions using appropr

  1. Modelling with Sketches: Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem
  2. Measuring accurately: Make systematic and careful observations, take accurate measurements using standard units and equipment including thermometers and data loggers
  3. Classifying living things: Gather, record, classify, and present data in a variety of ways including tables, bar charts, labelled diagrams, and keys