this book is great fun and really interesting for children from 4 years. Personally I have a little heart for the baby floating in the pocket of water and for the animation on broccoli digestion where you have to drag along lœsophage broccoli in the stomach through the intestines with each step corresponding explanation and especially the grand finale that makes laugh every time my children ie a small pull tab with illustration to what happens at the end of digestion (I'll let you discover what ...).