To provide an educational toy which enables a user to infer various variations of combined and continued patterns made by plural sheets of square sheets printed with patterns, and a toy which has no dangerousness of missing, etc., and is made possible to easily put together and is not bulky when not used.

This toy 1 is made by connecting plural square sheets 10, each with at least three sides, rotatably around each near-apex point 12 as the center. The toy 10 is made so that, when sides of each square sheets are overlapped, patterns at the overlapped side 10a parts are made continuously recognizable, dimensions of overlapped sides are almost same, each side has a pattern so as to be recognized to be cut at almost the center, each square sheet 12 has a rotation stopper 30 inserted into a communicating hole 14 in the vicinity of an apex 12 on the square sheet to rotatably and mutually connect square sheets, and the rotation stoppers 30 are made not to mutually overlap.