PURPOSE: To provide a cookie for intellectual training composed of two pieces of flat cookies detachably bonded together, wherein a problem and its answer are printed to one face and the reverse face of one of the cookie, respectively, and the face printed with the answer is covered with the other piece of cookie having no marks.

CONSTITUTION: A problem such as a letter 1 is printed, e.g. by baking, etc., to one face of a flat-shaped cokie such as biscuit, and its answer is printed to the reverse face of the cookie. The answer-side of the cookie is covered with another cookie 5 having no printed marks, and bonded together partly 3. The upper cookie can be easily separated from the lower one by breaking the perforated parts 4. (The illustrated letter is a "kanji, or Chinese ideograph used in Japanese writing" which means "sea", and the reverse face will bear its pronunciations "umi" and "kai".)