Percent Shop

What your child will figure out

• Connect one cell in a hundred-grid with 1% of the original price rather than one dollar.
• Keep original price, discount amount, and sale price distinct while calculating a promotion.
• Explain why a fixed percent produces a different dollar discount when the original price changes.
• Estimate and then verify the smallest percent discount that meets a novel budget.

The levels

1. Sticker sandbox

   Manipulate the full hundred-cell sticker and observe percent, dollars off, and dollars remaining together.

2. Quarter-off print

   Predict and verify 25% off an $80 sneaker.

3. Same sticker, new price

   Keep 30% fixed while changing the original price from $50 to $90.

4. Target-budget promotion

   Find the smallest discount that takes $72 below a $56 budget.