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.

Get students in a planet-friendly mindset with this Earth Day-themed logic puzzle!

Don't let your mind go numb this winter break! Stay sharp with a challenging Sudoku puzzle.