Kenken puzzles for mental math and logical thinking
![Image](https://2.bp.blogspot.com/-xwMJyJhiw_Q/V8ObZvFeFmI/AAAAAAAABZ0/5-c2l4C2kvwc_8Dln-_2oAndQ780KQ__gCLcB/s320/screenshot-www%2Bkenkenpuzzle%2Bcom%2B2016-08-28%2B20-01-35.png)
Here's another fun idea to get a bit of mental math into the math lessons in early grades... play KenKen puzzles! (And they are really neat logical thinking puzzles for any "grade" or age - I enjoy them too!) You can play Kenken online here - options include the puzzle size, operations to use, and difficulty level. The image above shows a 5x5 solved Kenken puzzle that uses all four operations. You might also check the offer for free weekly KenKen puzzles that Denise mentions .