Author Description

This set of books covers four stages in accordance with ages. The questions in the books advance from easy to difficult step by step, in order to gradually inspire childrens brain potential and stimulate their thinking ability as well as training them to concentrate their attentions, making them understand the sense of accomplishment and self- confidence for independently solving problems. 100 classical and interesting questions for training are set in each book to inspire childrens brain potential, exercise their comprehension, analytical and logical thinking skills and rapidly and efficiently improve their IQ during the relaxing games.