Ice excavations can be a great activity for kids of all ages. Younger children can enjoy pouring warm water over the ice to rescue small figures, while older children can use it as an opportunity to set up a science investigation. They can think about which variables to change and which to keep constant to make it a fair test.
To set up a froggy rescue, fill a medium-sized container with plastic frogs and top it up with water. Place it in the freezer until frozen. Before starting the activity, remove the ice from the freezer and let it melt for 5-10 minutes.
To melt the ice, use droppers or spoons to drip warm water over it. Older children can also sprinkle salt over the ice to help it melt faster.
You can record the results of the activity by drawing pictures or taking photographs of the ice at different time intervals. Some key vocabulary for the activity includes ice, cold, frozen, warm, slippy, wet, freeze, melt, water, solid, and liquid.
Here are some extension tasks you can try:
1. Create a storyboard or cartoon about the froggy rescue.
2. Imagine what the frozen frogs would say if they could ask for help.
3. Freeze smaller ice blocks with just one frog inside and set up a froggy rescue race.
4. Leave the ice blocks in different places, such as outside, inside, in the fridge, in the freezer, in the sun, and in the shade. Try predicting the order in which the ice will melt.
You can also try other icy experiments, such as painting on ice or finding out why salt melts ice.
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