Kōkiri Learn

Week 2 of 5

From words to a rule

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Session 1 · SOLVE: Link Ideas

Letters for numbers

  1. 15 minWrite the word rule with a letter: 'tiles = 3 × step + 1' becomes t = 3n + 1.
  2. 25 minWrite rules for your patterns and check them against the table.
  3. 10 minPlot the pattern on a graph: straight line or curve?

Session 2 · SOLVE: Link Ideas

Connecting rules

  1. 20 minTriangular numbers: why is the rule n(n + 1) ÷ 2?
  2. 20 minPolygon angles: triangle 180°, square 360°… find the rule for n sides.
  3. 10 minTohu asks one question about why a rule works.

Getting started

Use the 'multiply by the step, then add' frame.

Stretch

Find a rule for a pattern where the step is squared.

Checkpoint

A rule that matches every row of the table.

Activities for this week