Thanks for registering your feedback! But remember that the winner is determined by the total number of votes. And you'll need to register as a member of the Exchange in order to cast your ballot. You can sign-up at this link - it's free; all you need is a valid email address. Happy voting!

The Earth Day lesson activity contest is now closed to new entries. From now until July 24, you can download lessons from the finalists and cast your vote for the best submission. The lesson with the most votes will win a classroom package worth $US3,500.

Make history with SMART and you could win. We’re looking for your best lesson activity about a famous historical figure created with SMART Notebook software. The person who submits the best lesson activity will receive a SMART classroom package worth over US$3,500, including a SMART Board™ 600i interactive...

That's right - there are only two days left to cast your vote in the Earth Day Lesson Activity contest. Check out the full slate of entries here , and vote for your favorite in this poll . We'll tally the votes and announce the winner at the end of this week. And be sure to check back on April...

A quick update: If you need a demo on how to upload a lesson activity for this contest, please watch this video.