The three protagonists Ed, Richard and Mou are clever and funny companions for their young readers when they discover boldly illustrated and explosive experiments and exciting things to try out themselves. There is an experiment for each week of the year which children can do with or without their parents and, most importantly, with materials they can easily find in their homes. Surprising, unusual but easy-to-do experiments on topics from air to water, from optics to gravity accompany the children through four seasons.