# Current Problems of the Week

## PrimaryColor Competition
- September 28
Determine the results of a color popularity contest Preview: Making Sandwiches |
## AlgebraSierpinski Stages
- October 5
Find and use patterns to determine the perimeter of an interesting shape. |

## Math FundamentalsLatest Solution: Sports Weigh In |
## GeometryAll Around the World
- September 28
A wire wrapped around the equator of the Earth is lengthened. What happens? Preview: Boxing Up Harry's Broom |

## Pre-AlgebraDownloading Duel
- September 28
Whose downloading task should take longer? Preview: Apple Picking |
## Trig & CalculusCount Your Seinneps
- October 5
Find a system of coins that uses the fewest coins possible without repeating coins. |