"I'm in a bagel! I'm outside the bagel! " "Come with me, egg!" ..... These interesting and vivid words come from a math picture book I recently read, A Happy Day with a Hammer and an Egg.

This book tells the story of two little mice, a hammer and an egg. After successfully avoiding the chase of the fat cat, they met a lot of delicious food and spent a happy day playing. At the same time, they were exposed to some mathematical phenomena during overeating. Picture books focus on the concept of space and deepen children's understanding of measurement concepts and measurement tools through different themes. Many concepts of mathematical geometric space are incorporated into the story, such as front, middle and back, left and right, distance, inside and outside, opening and closing, various shapes, especially the shapes made of spaghetti in the buffet, so that children can learn a lot of mathematical knowledge happily without knowing it. At the same time, this method can effectively guide children to connect these concepts of space and geometry with things they encounter in daily life, so that children can apply what they have learned instead of memorizing them.