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Thinking sheet · Math and science
What Dissolves?
Stir sugar, salt, sand and more into water. Predict, test and record what disappears and what doesn’t.
- Grades
- 1–5
- Time
- about 25 minutes
- Topic
- Math and science
- Kids practice
- mixtures and solutions, fair testing, recording data
What kids do
“Stir it in. Does it vanish or stay?”
- Predict, stir, record
- Draw the cups after one minute
- Would warm water change it? My guess:
How to run it
- Use the same amount of water and the same number of stirs for each.
- Clear cups make it easy to see.
- Try warm water as a second test.
Talk about it
- Where did the sugar go?
- Can you get the salt back out?
- Why did the sand sink?
Take it further
Leave the salt water out for a few days. What’s left?
Pairs well with
Free for home and classroom use. Print as many copies as you need.
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