Before you dress up and go trick-or-treating, try a problem-solving challenge full of cool Halloween costumes!

Reach the peak of puzzling by completing this challenging sudoku for middle schoolers!

Students use algebraic thinking to find the value of each symbol in this Valentine's Day math puzzle!

Students use algebraic thinking to find the value of each symbol in this Earth Day math puzzle!

You just won an amazing prize, but it’s locked in a safe! Thankfully, the code is a single integer between -40 and 40, and you’ve got the clues to solve it.