Materials List:
Clay Boats
https://www.teachengineering.org/activities/view/duk_float_mary_act
- non-hardening modeling clay, 1/2 stick (~2 ounces or 50-60 grams) per student, plus some extra in case any get too wet to mold
- tub of water, at least 6 inches deep, per four or five students
- 100+ large washers to use as weight for boat testing, such as 1.5-inch fender washers; available at hardware stores
- paper towels (dozens)
- roll waxed paper
- masking or transparent tape
https://www.teachengineering.org/activities/view/duk_float_mary_act