float (v): trôi nổi
sink (v): chìm
air (n): không khí
light (adj): nhẹ
heavy (adj): nặng
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float (v): trôi nổi
sink (v): chìm
air (n): không khí
light (adj): nhẹ
heavy (adj): nặng
Listen and read.

Which objects are light and float? Which objects are heavy and sink? Make a poster.
Look and color.

Read and write a or b.
