Replace the hanging toy with a ball with a bell, and the mother helps the baby's little hand pat the ball. The ball will swing back and forth and make a sound to attract the baby to beat constantly. The baby can't estimate the interval yet, and his hands are not flexible. He often misses, and it is difficult to hit, and the ball runs away. It's hard to fight again. You can use the swing of the ball and the bell to attract the baby.

Change the hanging position of the ball every time you play, so as to avoid cross-eyed observation for a long time. Put the ball away after playing to prevent staring. Practice flapping a moving target, further practice hand-eye coordination, and prepare for catching the lifted toy at 4 ~ 5 months.