MAKE · FREE FOR EVERYONE
Free for everyoneFoil boat float test
Shape a foil boat, load it with pennies until it sinks, then redesign it and see whether the new version carries more.
The Sage Dad · Everyday play
A child’s activity page plus a grown-up guide. White background, low-ink artwork.
BEFORE YOU BEGIN
Gather a few things.
This sheet, foil squares, tub of water, 20+ pennies or small weights, towel.
One useful question
What did you change that helped the most?
WHY THIS WORKS
A little more than a worksheet.
Design changes how much a shape can hold.
Make it gentler
Float the boat and add 5 pennies. Count out loud.
Add a little stretch
Predict how many pennies each shape will hold, then check your prediction.
A good place to stop
Dry everything and keep the best boat for tomorrow.