1256.Resource, Open Middle, Challenging Math Problems (K-12)

 Challenging math problems for K-12 are included. This link was referenced in one of the middle grade GDOE MathCon sessions on July 19, 2021. This was copied and pasted directly from the website:  "Most of the problems on this site have:

• a “closed beginning” meaning that they all start with the same initial problem.
• a “closed end” meaning that they all end with the same answer.
• an “open middle” meaning that there are multiple ways to approach and ultimately solve the problem."