$9.95
See if it's really the one
Search with this product to compare it, find similar styles, or turn up something better before deciding.
To understand what happens when simple machines work together, one has to know the basic things they all do separately. The concepts of input and output, work and mechanical advantage are illustrated through clever animation. “Excellent. Our students were unanimous in their recommendations for purchase.” — School Library Journal. 12 minutes | Color
Have a question about this?
We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
$9.95