Activities
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Discovering sink and float properties
What You Need:
• A clean, unused sponge and a variety of objects that will float or sink
• A container of water
What To Do:
1. Let your child explore a clean dry sponge; then have him place it in the container of water and explore the wet sponge. Describe how it feels, e.g., hard and bumpy when it is dry; and soft and squishy when it is wet.
2. Do a little experiment. Ask your child what he thinks will happen when you put the sponge under water and let go. For example say, “Will it sink or float?” Describe what happens as you watch it float back to the top.
3. Try experimenting with other objects. Have your child guess whether each object will float or sink before you put it in the container of water.
! Safety Alert: Never take your eyes off your child while he’s in the bathtub or playing with a container of water. Children can drown in just a few inches of water.
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