Check it out:

- Celebrating Square Root Day
- Have a rootin’ tootin’ Square Root Day
- Prime, Composite, and Square Numbers activity
- Free, printable Square Roots Worksheets
- About the Pythagorean Theorem
- Pythagorean Puzzle — a lesson plan prototype
- 81 proofs of the Pythagorean Theorem

And coming soon: **Pi Day**.

**Edited to add:** Jonathan‘s class enjoyed extending the concept to include other products. Using the m/d/yy format (not the 4-digit year), how many times in your life has it been true that ?

I’ve seen a bunch of square root day posts today, but no one else had a photo of a tree with actual square roots. That’s pretty cool.

I should offer a hat-tip to Miss Cellania, who wrote the first article above. She found the tree with square roots at Flickr and included it near the end of her post. I loved the picture and just had to use it.

Love the photo! And, I wish I would have known earlier today… we could have had some square root fun! Thanks for the links!

Thanks for finding these! I’m so sorry I missed it yesterday!

The rootin’ tootin’ one is sad. The author is taking her stand as a math-phobe.

My Math classes loved square root day. Check out our video on my blog at http://pnaugle.blogspot.com/