Online Math Collection

Exhibit Math
Harcourt Teachers-in-Residence developed these problems to enhance your visit to four Franklin Institute exhibits: The Sports Challenge, The Train Factory, KidScience, and Space Command. Work the problems while visiting the museum, or solve them as a follow-up activity.

Melting Pot Math: Multicultural Problems for the 21st Century
Solve math problems inspired by cultures from around the world. This collection, created in the 2001-2002 school year, offers challenging problems that will help students see the connections between social studies and math.

PEMDAS
Remember PEMDAS and you'll always know your order of operations.

Open-Ended Math Problems

Puzzling and Perplexing Seasonal Math Problems

Neighborhood Math

Mathematics Hotlist

Toothpick Puzzles