材质：GPPS。内含12片。多种颜色的探索游戏。分别通过这些变色片来观察这个世界，有什么不同？将变色片重叠，有什么变化？通过学习颜色混合的现象，培养探索精神。
Perfect for making observations, conducting investigations and gaining experience using science tools, our handy, translucent paddles overlap to show how colors combine! You get 4 plastic paddles in each set.
