This SmartBoard lesson is a review game you can use after teaching about pollution and conservation. I use it as a review the day before our test as a whole group game. I split the class into teams and the teams compete to see who can win the most points by answering questions correctly. It is geared for 3rd graders and meets the Georgia Performance (GPS) standards for science. If your school uses the HarcourtÃƒï¿½Ã‚Â© Science Georgia Edition text this covers the material in chapter 8. It includes 4 interactive slides.