Second: the freebies!
FOSS is known for it's interactive games that go with each module on their website. I would like to showcase a different one for the next few blogs so that you can play with them at home!
This one comes from the new 3rd Edition Unit entitled "WATER". The game is called Evaporation Station. This game allows you to manipulate variables on two sides of a scale to see which side will evaporate more quickly. You can manipulate the temperature, the size of the containers holding the water and the cloud cover. It is a great game that you can introduce whole class on your Smart Board, but the students can practice it individually in the computer lab or at home for homework. It is fun and really shows how temperature, heat and container size does affect evaporation.