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Skills available for Missouri fourth-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

PS2 Motion and Stability: Forces and Interactions

  • PS2.A Forces and Motion

  • PS2.B Types of Interaction

    • PS2.B.1 Plan and conduct a fair test to compare and contrast the forces (measured by a spring scale in Newtons) required to overcome friction when an object moves over different surfaces (i.e., rough/smooth).

    • PS2.B.2 Predict how changes in either the amount of force applied to an object or the mass of the object affects the motion (speed and direction) of the object.

PS3 Energy

  • PS3.A Definitions of Energy

    • PS3.A.1 Use evidence to construct an explanation relating the speed of an object to the energy of that object.

  • PS3.B Conservation of Energy and Energy Transfer

  • PS3.C Relationship Between Energy and Forces

    • PS3.C.1 Use models to explain that simple machines change the amount of effort force and/or direction of force.

  • PS3.D Energy in Chemical Process and Everyday

PS4 Waves and Their Applications in technologies for Information Transfer

  • PS4.A Wave Properties

    • PS4.A.1 Develop a model of waves to describe patterns in terms of amplitude or wavelength and that waves can cause objects to move. (Boundary: The terms amplitude and wavelength should not be assessed.)

  • 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

  • LS3.A Inheritance of Traits

  • LS3.B Natural Selection

  • LS3.C Adaptation

  • LS3.D Biodiversity and Humans

ESS1 Earth's Place in the Universe

ESS2 Earth's Systems

  • ESS2.A Earth Materials and Systems

    • ESS2.A.1 Plan and conduct scientific investigations or simulations to provide evidence how natural processes (e.g. weathering and erosion) shape Earth's surfaces.

  • ESS2.B Plate Tectonics and Large-Scale Systems

  • ESS2.C The Role of Water in Earth's Surface Processes

  • ESS2.D Weather and Climate

  • ESS2.E Biogeology

ESS3 Earth and Human Activity

  • ESS3.A Natural Resources

    • ESS3.A.1 Generate and compare multiple solutions to reduce the impacts of natural Earth processes on humans.

  • ESS3.B Natural Hazards

  • ESS3.C Human Impacts on Earth's Systems