This site has games and a nutrition tracker students can download to keep track of what they're eating. This is a good site for students to get charts to start their research and a shopping list that encourages students to pay attention to the food pyramid.
This site is from PBS kids has students using a virtual kitchen to solve a puzzle and do experiments. It also has experiments the kids can do in their own kitchens and post the results
Game Central - Discovery.com. One of the most intriguing stations on television brings a host of varied gaming opportunities to youngsters of all ages.
This game would be more suited for Middle to High School students. Players are asked question about lasers when they reach a star in the game. Players are also asked to sort laser items from other items.