Z. Teun Spaans was born in 1954 in the Netherlands, and studied mathematics at the university of Leiden. He has over 25 years of experience in various roles in the IT. His hobbies are photographing, hiking and solving and creating puzzles.
Do you like puzzles? In this free e-book you find 20 Bongard puzzles aimed at children from 4 to 8 years old.
You don't know what a Bongard puzzle is? Open this book to find out!
This book offers logic puzzles designed to exercise your wonderful brain. Within a unique format, this booklet provides you with problems which are largely language and culture independant.
Children love it when you read them bed time stories. Here are 5 bedtime stories of the type I told our children when they were young. Suiteable for ages 3-7.