Problem of the Week (POW) problems are fun to do, and each one illustrates an important concept in math or an important moment in math history. Pascal's Triangle is a typical example, as it begins with just adding whole numbers, and its repetitive nature and rapid growth often fascinate younger students. Yet this same problem offers older students an opportunity to work on binomial coefficients, combinations, and advanced topics in number theory.

A new Problem of the Week is introduced every other week, and class time in the intervening week is spent working in small groups to share students’ ongoing work on the problem. The problems that are presented are often related to topics that students are studying in other subject areas, and through these problems students encounter mathematical concepts that aren’t normally part of an elementary mathematics curriculum. Above all, POW teaches students that mathematics is a problem-solving undertaking, that many approaches are valid in working toward a solution, and that working with others can be a lot of fun and often leads everyone to a better understanding of the concepts at hand.

We encourage you to explore and share our POW archive. We will post new ones as they are assigned to the students throughout the school year. Enjoy!

A new Problem of the Week is introduced every other week, and class time in the intervening week is spent working in small groups to share students’ ongoing work on the problem. The problems that are presented are often related to topics that students are studying in other subject areas, and through these problems students encounter mathematical concepts that aren’t normally part of an elementary mathematics curriculum. Above all, POW teaches students that mathematics is a problem-solving undertaking, that many approaches are valid in working toward a solution, and that working with others can be a lot of fun and often leads everyone to a better understanding of the concepts at hand.

We encourage you to explore and share our POW archive. We will post new ones as they are assigned to the students throughout the school year. Enjoy!

- The Sierpinski Gasket
- Goldilocks and the Square Root of Two
- Pentominoes
- Sorting
- An Old Fashioned Grocer
- Pythagorean Theorem
- Fibonacci Trees
- Factor Trees
- Design Your Own Treehouse
- Adding Fractions - A Lot of Fractions
- Partitions!
- RATS!
- Regions in a Circle
- SLACDA!
- Square and Chop!
- Stories from Arabia
- yamátárájabhánasalagám

- The Challenges of Designing a One Room Schoolhouse
- Regions in a Circle
- Partitions
- SLACDA
- Summer Recreation
- Pentomino Farms
- Adding Fractions...LOTS of Fractions
- Perspective Drawing
- Logic Grid Puzzles
- Spring Break!
- 1 of 3: Stomachion!
- 2 of 3: Links Relating to the Stomachion
- 3 of 3: Stomachion Drawing
- Street Corner Polygons
- Tic Tac Toe

A progressive, Quaker day school welcoming students in Pre-K through 8th grade to our historic Princeton campus nestled in the woods.