Multiplication study vessel and multiplication study board

摘要

PURPOSE:To obtain an easy-to-operate multiplication learning unit for learning a multiplication method. CONSTITUTION:A rotary drum 28 is so supported as to be freely rotatable in a housing 27. The external surface of the rotary drum 28 is provided with a multiplicand display section 30 for showing a multiplicand 29, an answer table display section 33 for sequentially showing the multiple 32 of the multiplicand 29, and a rotation operation section 31 for rotating the rotary drum 28. A multiplicand display window 41, each of multiple display windows 42 and a drum operation window 43 corresponding to each of the aforesaid sections 30, 33 and 31, are opened through the housing 27. Also, each of the multiple display windows 42 is fitted with a door 44 of free open/close type. Furthermore, a multiplier display section 48 is provided for showing a multiplier 47 corresponding to each window 42.