If you need a unit to grab those reluctant learners and "Power" them up, you can't do better than force and motion! It's filled with experiments, plus lots of movement and action. It's everything kids could want! Get links to everything you need on this post!
This definition of 3 is found in many religions 3x3 and physics. Physics professor Brian Greene of Columbia, explains it so beautifully for everyday people "The Elegant Universe" The # is 9. In quantum mechanics a particle holds 3 to balance itself, but itself needs balancing w/2 other 3s. Neutron, Positron & Electron, 1 unit. Their mass equals them out in power. Need 2 more to keep the balance to work, how Universe runs on quantum rules. Feng Shui 9 is the real kicker.