UNIT 3Р Р浮和沉РFLOATING AND SINKINGРSome objects float.?Some objects sink.?Let me think.?Why do some objects float??Why do some objects sink?Рfloat (浮)?sink (沉)РLesson 1 What Floats? What Sinks?РDucks and boats float. Stones sink. Why?РWhich objects float? Which objects sink? What do you think? Write the numbers.РI think pencils float.РWhy?РPut the objects in water. Do they float or sink? Write the numbers.РThese objects float.РThese objects sink.Р3, 4, 5, 6, 8, 9Р2, 7, 10Р1,РHere are three sticks, from light to heavy. Which floats? Which sinks? What do you think? Tick (√).РPut the sticks in water. Do they float or sink? Tick (√).Р√Р√Р√РThe log is heavy. The stone is light. Do they float or sink?РSome objects float. Some objects sink.?Some light objects sink.?Some heavy objects float.
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