In the Let's Have a Ball science unit children will engage in hands on activities using items like ping pong balls, tennis balls, balance scales, containers, and marbles. Children will explore the characteristics and properties of things that roll in 15 very unique lessons. Lessons can be completed either independently or in small groups. Properties include; mass, buoyancy, kinetic energy, sorting, grouping, gravity, air resistance, momentum, and measurement. Each lesson has accompa