Colorful Balls
Publish Time: 2018-10-17 Origin: Site
Do you know that these colorful beads that like the jelly can be grow in the water?
Do you know why can they grow ,why can they sparkle?
This test tube science toy can told you these answers. At the same time, it can help children to improve their ability of perception for color,and help them to learn more knowledge of chemistry during they enjoy themselves,to become a happy scholar.