Disclosed herein is a study reference book. The study reference book comprises question pages, explanation pages, and a securing member to secure the question pages and the explanation pages. Each question page comprises question items, multiple choice answers related to each question item, an answer-marking part on which a correct answer of each question item is marked, and a first correct answer-punctured space for a previous question page. Each explanation page is positioned at an opposing side of the question page when the study reference book is open, and comprises explanation items for the question items, and a second correct answer-punctured space positioned to locate correctly at a correct answer-indicating space of the answer-marking part of the question page when leafing the explanation page leftward to overlap the question page. A user can confirm whether or not answers marked on the answer-marking part are correct immediately after marking the answers.

 
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< Interactive system for building, organising, and sharing one's own databank of questions and answers in a variety of questioning formats, on any subject in one or more languages

> Interactive speech enabled flash card method and system

> Collapsible freestanding drawing board

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