Books by Andy Liu

This book convenes a selection of 200 mathematical puzzles with original solutions, all celebrating the inquisitive and inspiring spirit of Nobuyuki "Nob" Yoshigahara - a legend in the worldwide community of mathematical and mechanical puzzles.

This unique book presents mathematical competition problems primarily aimed at upper elementary school students, but are challenging for students at any age.

This book describes projects in a Mathematical "Circle," i.e., an organization that discovers and nurtures young mathematical talents through meaningful extra-curricular activities. Volume I describes how to run a Circle, and Volume III explains what actually takes place in the Circle.