Proportionality at the supermarket

Shopping receipt: bouncing stamp, proportionality table with formulas, rule of three step by step, calculated discounts, lines and gaps.

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Cover of the presentation “Proportionality at the supermarket”

What’s inside

  1. Proportionality
  2. Direct or inverse?
  3. The apple table
  4. The rule of three, step by step
  5. Sales: the percentage on the tag
  6. Inverse proportionality
  7. Next lesson Scales and maps

How to use it

  1. Click Use this template: it opens in Revela, in your browser. Nothing to install.
  2. Replace the text, images and data with your own. The speaker notes tell you what to say on each slide.
  3. Present it with your phone as a remote, share it with a link or download it as PowerPoint.

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