问题源于思考、源于生活。这不,上海市崇明县长江小学的同学们在陪妈妈逛菜场时就发现了一个有意思的问题。瞧,这塑料桶中装的螃蟹长得多么奇怪啊!它们为什么长成这样,它们身上藏着什么不为人知的秘密?爱观察、勤思考的同学们个个摩拳擦掌,要对这个问题一探究 The problem stems from thinking, from life. This does not mean that students in Chongming County, Shanghai Elementary School discovered an interesting question while visiting their mom. Look at how weird the crabs in this plastic bucket grow! Why do they grow like this and what hidden secrets do they have? The students who love to observe and ponder over each other are gearing up to explore this issue