Skip to content
Exit presentation

Computational Thinking Basics

Spot the repeat

You thread rakhi beads. You do not look back at the whole strip. What do you remember?

Loading lab…

You remember only the piece that repeats. So you need not remember every bead.

A bead strip: circle, circle, diamond, again and again.
Step 1 of 3
  1. A bead strip: circle, circle, diamond, again and again.
  2. The first three beads are the repeating piece.
  3. It repeats six times — eighteen beads in all.

A pattern is a small piece that repeats.

Name the piece once. A long strip becomes a short line: "three beads, six times."

A clap-clap-stomp dance is a pattern. A school timetable is a pattern too.

Jump to lesson

This track

  1. 0 Start here
  2. 1 Split the big job
  3. 2 Spot the repeat
  4. 3 Algorithm = exact steps, in order
  5. 4 Follow the steps exactly
  6. 5 Test the tricky case
  7. 6 Sorting is an algorithm too
  8. 7 The big picture
  9. 8 Track quiz

Other tracks