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Related Activities to Try at Home
Marble Jar Start with 4 objects in a jar (marbles, pennies, paper clips, or some other small objects). Imagine adding 6 more each day. How many will there be in 10 days? 20 days? 50 days?
100 days? Can you come up with a rule for determining the number of marbles in the jar after any number of days? Repeat the Marble Jar activity with other numbers (start with 5 marbles, add 9; start with 100 marbles, subtract 6; and so on). Can you make a graph to show these changes?
Number of Days | Number of Marbles |
---|---|
Start | 4 |
Day 1 | 10 |
Day 2 | 16 |
Day 3 | 22 |
Day 10 | ? |
Day 20 | ? |
Day 50 | ? |
Day 100 | ? |
Any number of days | ? |