Study teaching aid for memorization

摘要

(57) Abstract Objective With memorization study verification of answer every of questions is made easy, it is denseWith. And, raise the concentration for problem. Constitution The problem part 1 which was inserted in study vessel 6 and the answer part 2And others by moving the sheet 3 which becomes to the direction of 7 the scopeAnswer of the problem which is displayed in the first section of 4 is verified with scope lowest columnru.