3-PS2-1

Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.

Clarification statement: Examples could include an unbalanced force on one side of an object can make it start moving; and, balanced forces (including friction) acting on a stationary object from both sides will not produce any motion at all.

Assessment boundary: Assessment is limited to one variable at a time: number, size, or direction of forces. Assessment does not include quantitative force size, only qualitative and relative. Assessment is limited to gravity being addressed as a force that pulls objects down.

Resources

Examples and discussion of resources for the learning, teaching, and assessment of 3-PS2-1.

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Assessment

What assessment of 3-PS2-1 might look like on a NY state exam.

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NGSS Dimensions

Performance expectation 3-PS2-1 was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and engineering practices

Disciplinary core ideas

Crosscutting concepts

Connections to Other Standards

3-PS2-1 connections to ELA, math, and other science standards as outlined by the NYS Education Department:

Page contributors:

P-8 | 3. Forces and Interactions