__Websites with over 10,000 problems and solutions__

Links here are categorized into

- Elementary school level problems

- Middle school level problems

- High school and undergrad level problems

Sometimes, it is hard to motivate students to work on the hard math problems listed

on the sites below. Check out "enjoying math" series of books by Dr. Deepak Kulkarni

on amazon that teach problem solving with fun

__Elementary level problems__

__Middle school level problems__