Vinyl Educational Alternative Energy Clever Lightweight and Durable: Designed to

Lightweight and Durable: Designed to be lightweight yet robust

All tubes have an inner diameter of 4mm

Determine harmonic motion by counting oscillations

Physical Properties: This product appears as a white powder with an odorless nature

Vinyl Educational Alternative Energy Clever Lightweight and Durable: Designed toIt provides an excellent way for students to learn about alternative energy. This ball features 90 facts and questions about alternative energy. That will give students a thorough introduction to this topic. It can be used at school in organized classroom activities and in counseling settings. 24" Diameter. Designed for use in classrooms but is an ideal choice for science classrooms and household use. If you need custom order with different sizes