Water Play Activity: First, fill the box with 8% full water and prepare some items that can float up (such as toy ducks, small plastic balls, small foam, empty bottles, cork stoppers, small plastic boats, table tennis balls, etc.). And for items that can sink (small stones, small iron pieces, small tiles), try to see which teaching aids will float when thrown into water? Which teaching aids will sink when thrown into water? Place fine sand in the sand activity box and prepare some small props such as hourglass, shovel, and cup for children to play games such as pouring sand, loading sand, shoveling sand, or freely shaping sand. It can develop the sensitivity of touch and sensation in young children, using fingers to knead, grab, poke, press, pinch, squeeze, pat, hit, etc., which greatly helps children’s finger muscle exercise and promotes the development of small hand muscles and bones