Some children like electric toys. Press the button and switch, the toy itself will do actions and bring the children a happy moment. However, the shortcomings of these toys are that they can only provide children with the “surface excitement”, not detect its internal secrets and structures. Because the electric toys are of the highest price and most fragile, some parents only let the children watching the operation of parents, rather than let the children reach out and touch to play by themselves. The result of doing this way is only to make children excited for the moment, but his interest in the toys will not last too long, let alone to cultivate the spirit of exploration of the children.