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Skills available for Missouri third-grade science standards

Standards are in black and IXL science skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practice that skill.

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PS1 Matter and Its Interactions

  • PS1.A Structure and Properties of Matter

  • PS1.B Types of Interactions of Matter

    • PS1.B.1 Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.

PS2 Motion and Stability: Forces and Interactions

PS3 Energy

  • PS3.A Definitions of Energy

  • PS3.B Conservation of Energy and Energy Transfer

  • PS3.C Relationship Between Energy and Forces

  • PS3.D Energy in Chemical Process and Everyday

PS4 Waves and Their Applications in technologies for Information Transfer

  • PS4.A Wave Properties

  • PS4.B Electromagnetic Radiation

  • PS4.C Information Technologies and Instrumentation

LS1 From Molecules to Organisms: Structure and Processes

LS2 Ecosystems: Interactions, Energy, and Dynamics

  • LS2.A Interdependent Relationships in Ecosystems

  • LS2.B Cycles of Matter and Energy Transfer in Ecosystems

LS3 Heredity: Inheritance and Variation of Traits

ESS1 Earth's Place in the Universe

  • ESS1.A The Universe and its Stars

  • ESS1.B Earth and the Solar System

  • ESS1.C The History of Planet Earth

ESS2 Earth's Systems

ESS3 Earth and Human Activity