Mass and density are difficult topics for kids to understand, and even more difficult when you have visual impairments or blindness. Learners will make boxes and fill them with cotton, sand, or crushed paper. They will feel the density...

Can my windmill pick up a weight? Given the same set of materials, groups design and build the most efficient windmill. On the first day, groups concentrate on getting a windmill to spin, while on the second day, they modify their...