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Kindergarten · lesson 2 of 4

Compare before and after motion

Compare before and after motion using supplied evidence and a solved model.

About 12 minutes, plus any extended practice

Download the grade pack

Supplied materials

  • For younger learners, an adult may read each direction aloud; pointing, drawing and spoken explanations count as responses.
  • Paper, drawing space or a browser document.
  • Reference card A: still changes to moving. Reference card B: moving changes to still.
  • Assessment case 1: Which scientific label fits the specifically described step or feature? Supplied case: Still, then rolling.
  • Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Rolling, then still.
  • Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: One square per beat, then two.
  • Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Three squares per beat, then one.
  • Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: At rest, then sliding.
  • Assessment case 6: Which scientific label fits the specifically described step or feature? Supplied case: Moving, then caught.

Learn the idea

Use two picture captions for each pretend toy. Name the observed change rather than guessing an unseen cause. Faster and slower compare motion over the same time.

Start means still changes to moving. Stop means moving changes to still. Speed up means travels farther in the same time. Slow down means travels less far in the same time.

For start, look for the clue “still changes to moving.” For stop, look for “moving changes to still.” More than one process can happen in a real situation. Answer about the one described in this question.

  1. Read or listen to the four science words and what each means. Say how the first two differ.
  2. Choose two of the short cases. Point to the clue that helps you choose a science word for each one. You may draw or say your answer.
  3. Answer each practice question. Say which clue helped you, then check the explanation.
  4. Use the extra task to make two examples that show different science words. Draw or say what makes each one fit.
Worked example

See the method in action

Worked reference-card problem: a card states “still changes to moving”; a second states “moving changes to still.” The first fits start and the second fits stop. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case.

Your turn

Check your reasoning

Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.

Helpful tips
  • Use the feature “still changes to moving” to justify start; do not sort by the name alone.
  • Distinguish stop (moving changes to still) from a different process occurring in the same situation.
Which scientific label fits the specifically described step or feature? Supplied case: Still, then rolling.

Feedback appears here after you check. This is practice, not a graded school assessment.

See the answer and explanation

start

The answer is start. In the notes, it means “still changes to moving.” Use two picture captions for each pretend toy. Name the observed change rather than guessing an unseen cause. Faster and slower compare motion over the same time.

Take it further

Create one new case showing start and one showing stop. Expected: the first explicitly shows “still changes to moving”; the second explicitly shows “moving changes to still.” Explain the distinction by drawing, speaking or writing. A label without a matching feature is incomplete.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.

More practice: try new cases

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

More practice: try new cases
1. Which scientific label fits the specifically described step or feature? Supplied case: Rolling, then still.
Need a hint?
  • Look for the described feature: moving changes to still.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
2. Which scientific label fits the specifically described step or feature? Supplied case: One square per beat, then two.
Need a hint?
  • Look for the described feature: travels farther in the same time.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.
3. Which scientific label fits the specifically described step or feature? Supplied case: Three squares per beat, then one.
Need a hint?
  • Look for the described feature: travels less far in the same time.
  • Compare the clue with each science word. Use only what the case tells you; do not add a new event.

Your choices are temporary. Feedback appears after you check all the answers.

Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.

Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.