It’s Friday and I have five free Curriki tee-shirts to give away. Curriki is a non-profit organization devoted to helping teachers develop and share lessons. It is free to join and participate in the Curriki community. Your contributions to community are encouraged.

To win one of the Curriki tee-shirts all you have to do is leave a comment on this post. In your post mention something that you learned about or shared on Curriki. At 6pm ET I will use Random.org to select five winners.