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Computational Thinking II

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A shop keeps 12 numbered cards in a row. To find one card, you look at cards one by one. How many looks will it take?

Five short stops in this track.

This track is Computational Thinking II.

What you will learn

  • Count the looks. How many steps a search really takes.
  • Look at the middle. Ignore half the cards at once.
  • Read a flowchart. A plan drawn with ovals, boxes and diamonds.
  • Draw one. Give every case an answer. A case is one way things can turn out.
  • Mend one. Predict, run, compare. Find the bug, a mistake.

Jump to lesson

This track

  1. 0 Start here
  2. 1 Steps written, steps taken
  3. 2 Look at the middle
  4. 3 Ovals, boxes and diamonds
  5. 4 Give every case an answer
  6. 5 Predict, run, compare
  7. 6 The big picture
  8. 7 Track quiz

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