* My 5 year old son, 2 year old daughter and their friends (with some help of my husband and/or me) have spent many an hour folding and flying these airplanes. True there are only 3 planes, but that hasn't stopped them from folding them over and over with different types of paper. I recommend this as a great stocking stuffer for any age kid, girl or boy!
* For the same money, you should get Quick and Easy Paper Planes that Really Fly, by Paul Jackson. This book has many more models and clear, easy instructions. My son already knew how to build the three planes in this foldout.