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Science · Grade 3

Ramp Tests: Change One Thing

Use trial data to compare ramp heights and identify controlled variables.

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Explore the knowledge outline and its source scope. This unit supports selected ideas.

Learning goals

  • Use trial data to compare ramp heights and identify controlled variables.

Before you begin

Read or listen to the short model before answering.

Age and grade do not measure readiness. Adjust reading or adult support to preserve the intended learning goal.

Follow the sequence

Teaching and response guide

  1. Which condition changes between the two sets of trials?
  2. What is the middle distance when the low-ramp results are ordered?
  3. A student changes both the car and the ramp height. Why is the comparison harder to interpret?

Watch for: Either change could affect distance, so the effect of height cannot be separated.

Check the answer criteria for each task. A supported explanation may have more than one acceptable response. These activities offer evidence to discuss; completing a sheet alone does not establish mastery.