Discover the secrets of the third dimension ! Guess how the 3D optic really works. 6 fascinating experiments will explain why it is necessary to wear 3D glasses, how two images can make one. How does our brain function ? How is the new information treated ? How is it transmitted ? Includes : - 3D glasses - 2 magnyfying cards - a box for stereo glasses - thread - 4 pairs of stereo half-images - white tissue-paper - 3D drawing paper - a geometric 3D image - 3D images - a plastic ball - a detailed instruction sheet Tested and approved by Science & Life Discoveries. Box dimensions : 20 cm x 14.5 cm x 4.5 cm.