What Comes Next? #189

Pattern puzzle 189 card

Challenge type: What Comes Next?  ·  Difficulty: ★★☆☆☆ Easy

Coders spot patterns so they can write loops instead of doing the same thing over and over. Try this one.

Pattern: pink square, red hexagon, red hexagon, pink square, red hexagon, red hexagon, pink square, then a question mark. Choices: A: orange circle; B: red hexagon; C: purple heart; D: orange star.
What comes next: A, B, C or D?

The pattern in words: pink square, red hexagon, red hexagon, pink square, red hexagon, red hexagon, pink square, and then… what?

Your choices

  • A: orange circle
  • B: red hexagon
  • C: purple heart
  • D: orange star
Need a hint?

Count how many things there are before the pattern starts again. Point at each one and say it out loud!

Did you know? When coders spot a pattern, they can write a loop: a few lines of code that repeat the rule as many times as they like. The answer page shows this pattern as real Python code!

For teachers and grown-ups

Skills practised: Pattern recognition, abstraction, and predicting the next step of a rule.

The big idea: Spotting a pattern lets a programmer replace lots of repeated steps with one short loop.

Questions to ask:

  • What is the rule, in your own words?
  • How many items repeat before the pattern starts again?
  • What would the 20th item be? How could you work it out without drawing them all?

Take it further: Children invent their own pattern with a hidden rule and challenge a partner to find it.