| 摘要 |
A set of blocks assembled to form a four-facet pyramid, three sets assembled to form a three-facet pyramid, each of the pyramids are formed at different angle respectively, to transform the four-facet to the three facet pyramid challenges the spatial concept of the players. At least, the player faces the challenges from the pyramids is to improve his reasoning about space with fun. Each of 12 building blocks is composed of 3~5 spheres, totally a set of blocks are aggregated 55 spheres on the base to form a four-facet pyramid, each of four sides of the base having 5 location pits, totally 25 location pits formed on the base. Totally 3 sets of blocks are aggregated 165 spheres assembled on the base to form a three-facet pyramid, each of three sides of the base having 9 location pits respectively, totally 45 location pits formed on the base.
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