DIY combination type educational growth toy.This product includes kaleidoscope material accessories plus instructions, suitable for children over three years old. Please use it under the supervision of an adult under the age of three.This children's educational toy can help children get in touch with optical science toys for the first time, satisfy curiosity, develop spatial imagination and exploration ability. Discover the novel world by understanding the combination and changes of graphics. High light transmission acrylic, clear image, good light transmission, bright colors and more beautiful.The installation steps are as follows: put the colorful beads into the colorful ball box, put the colorful ball box into the paper tube with the outer spiral surface facing out, put the light-transmitting disc on the top of the paper tube, tear off the plastic lens protective film, and paste 3M vertically Please dont tear off the excess 3M glue. Fold it into a prism and wrap it on the mirror surface. Then insert the prism, paste 3M glue on the upper part of the long straight tube, clip the paper tube cover on the connecting paper tube, and cover the connecting ring. The DIY kaleidoscope is completed by tightening the clamp.