Looking for a fun way to add rigor and critical thinking to your math block? These 40 2nd and 3rd grade math challenges are a great way to get students thinking critically about math. Use these 40 problems as a "problem of the week" for an easy center, early finisher activity or to help with enrichment during your math block. What's Inside the Math Challenges for 2nd or 3rd Grade: There are 40 challenge problems appropriate for 2nd or 3rd grade students. The challenge problems range across topic