(57) Abstract Objective As for this device to use the paper normally, drill study efficiencyThe mark, in the study teaching aid of the multistage entry seat type which can be done effectivelyThe study result of the ri and the user is raised. Constitution As for this device the problem paper set which becomes normally with the paperBy making the basis, write in the rapping coming window part, next peAnswering to be posted by the reply column of ji, already in that paper solutionAnswer and explanation to be printed with another color, to do the answering adjustingAnd others be able to understand the how to think for problem, furthermore it was possible,, withIt did not come, by checking, in the lower paper the rapping comingAs for problem of the field which it posts through the window, is not possible in checkFrom because it is understood, to choose the same tendency problem smoothly, the re-testBy the fact that is possible, in addition, designates the middle paper part as plural, doThe rill effect to be born, help of thoroughness understanding of the same serial problemru. This time, with the extensive exfoliation type paste attaching, the page simultaneousIt is designed in such a way that it cannot see, security of the answerRetention to be possible, in addition, the rapping coming window being less crowded of the paper of each stageIt is not possible other than the reply part to enter in the subordinate paper part,It is made the way.
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