The Life Starter
Sign up
Grade 4 · unit review

Review: Control a Paper Interactive Display

Design a paper flower animation with frames 1,2,3 and a sound toggle initiallyOff. Trace two toggles, describe the frame sequence and create a labeled status.

Download reviews and answer keys

Bring the unit skills together

Use these 4 new cases to check your reasoning. Choices are temporary and are not saved to an account, sent to staff or recorded as school grades. Download your current review choices before leaving or reloading.

Unit review questions
1. Screen rule: right adds x; down adds y. Start(2,5), move right 4 and down 1. Final position?
Need a hint?
  • Apply the stated coordinate direction and report the final ordered pair.
  • Do not use an upward-positive y convention when the screen model says down is positive.
2. Join text "6" and text "1", without a separator. Choose the joined text.
Need a hint?
  • Use the explicit input, condition and question aspect.
  • Reject a choice that adds an unsupported condition or answers a different question.
3. Toggle,Toggle,Toggle. Start sound=Off. What is the final state?
Need a hint?
  • Apply Toggle as a reversal and SetOn as an assignment to On.
  • Repeated SetOn does not have the same effect as repeated Toggle.
4. Display 2,3,1. Positions: 1=closed flower, 2=half-open, 3=open. Which sequence matches the listed positions?
Need a hint?
  • Read the displayed positions in the supplied order, look up each frame, and describe the change.
  • The number names a frame; preserve the stated display order instead of silently sorting it.

The download contains your current choices and any checked feedback. Keep the separate transfer-task work in your own document; downloading its instructions does not mark it complete.

Use the skills in a new task

Design a paper flower animation with frames 1,2,3 and a sound toggle initiallyOff. Trace two toggles, describe the frame sequence and create a labeled status.

Work on paper or in your own document. Explain the choices you made.

  • Use the pretend details in the task and name the rule you followed.
  • Show the steps or point to the detail that helped you choose.
  • Say one mistake to avoid or one thing this example cannot tell us.
  • Check your answer against the task. Change a part if you can show why it needs fixing.
Compare with a model response

Two toggles return Off→On→Off. Frames 1,2,3 show closed, half-open then open. A text status says Sound off, and a written sequence describes the visual change. The model does not specify actual playback speed.

A different response can also meet the criteria. Compare the evidence and reasoning, rather than copying the wording.