| Day | Amount to Put In | Total to Date |
|---|---|---|
| Day 1 | 1 cent | $.01 |
| Day 2 | 2 cents | $.03 |
| Day 3 | 4cents | $.07 |
| Day 4 | 8 cents | $.15 |
| Day 5 | 16 cents | $.31 |
| Day 6 | 32 cents | $.63 |
| Day 7 | 64 cents | $1.27 |
| Day 8 | $1.28 | $2.55 |
| Day 9 | $2.56 | $5.11 |
| Day 10 | $5.12 | $10.23 |
| Day 11 | $10.24 | $20.47 |
| Day 12 | $20.48 | $40.95 |
| Day 13 | $40.96 | $81.91 |
| Day 14 | $81.92 | $163.81 |
You have given the child an interesting problem, and have given many days for the child to think and talk about what is going on.
At school: If someone is going to donate some money to the school, ask the donor to help set up a similar problem, and come in every day to double the money. For example: Someone who wants to donate about $300 to the library, or the gym, or the band could come in every day to give double the amount of the day before. On day 15, she would have given a total of $327.65; she could offer the children the choice of keeping the money in the jar, or getting $300. If this seems like too many days to come in, she could start on the first day with $1.00 and by day 9 would have put about $250 in the jar.