Students used the properties of rectangles that they learned in the previous class to stake out a rectangle that represents an 8′ x 12′ foundation for a shed. They used a tape measure to measure off the sides and a carpenter’s square to make right angles and diagonals. If they actually made a rectangle, the diagonals should have been the same. If they didn’t make a rectangle, they made adjustments.
Students had hands-on experience using tools they might not normally use, and learned why it matters that we double-check their work.
We related this activity to Matthew 7:24-25. The kindergarten kids came by and suggested (demanded) we make play houses instead of sheds.