Toggle and set-on are different instructions

Use a two-sided light card and a visible starting state. Toggle depends on what the card currently shows, so two toggles can restore the start while two set-on commands describe a different process.

Two toggles return the card to its starting state.

Track state after each action

Use a visible initial-state marker. Commands that depend on current state cannot be interpreted reliably when that starting information is missing.

Set the initial state. Apply a toggle. Record the new state.

Which command depends on current state? Use tactile state markers.

Toggle differs from set-on.

Resources

• Human Robot Commands – Coding Without Screens Printable Game — Check the command conventions before using the sequence or debugging task.

Further reading

• CS Unplugged — Kidbots and algorithm activities
• Australian Curriculum Version 9 — Technologies overview

Read next

• An event starts an agreed response
• A shorter symbol message must still be recoverable
• A loop repeats the whole block inside it

Explore Coding and computational thinking. Browse all teaching articles.