• The "ChaCha Cube," which has an addictive "click" feeling when magnets attach, now comes in a clear parts version • Combine 7 parts, using your creativity and thinking skills, and challenge yourself with various shapes • Comes with 108 problem cards ranging from easy problems to difficult problems of level 4 It comes with an answer sheet, so you can be at ease • Set Contents: Blocks (1 of each of 7 types), 54 problem cards (double-sided printing), 1 answer book / Suitable for ages: 3 and up / Main body size (when in a cube shape): W 2.4 inches (60 mm) x H 2.4 inches (60 mm) x D 2.4 inches (60 mm)