These are the largest "Happy-Sad" balls we have seen! They are 1.5" in diameter! These two black rubber balls appear to be identical, but have extremely different physical properties. Dropped onto a hard surface, one ball bounces while the other hits the surface and stops immediately. Show students that some properties cannot be observed without experimentation. Set includes two balls (one "yes" and one "no").
Choositz Decision Balls
This product is shipped from our supplier's warehouse in CT, United States
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
Customers Who Bought This Item Also Bought
You recently viewed items