Planet Science, produced by the NESTA, provides students from pre-K through middle school with online games and activities for learning about science. Planet Science also offers teachers lesson plans that include the use of online and offline resources. Parents looking for activities to get their children excited about learning science should the parents section of Planet Science.

The Battle for Planet Science is one of the featured games on Planet Science. Battle for Planet Science requires students to use their knowledge of a variety of science concepts in order to succeed in the game. Prior to playing Battle for Planet Science you may want to have students review by trying the quizzes in the science news quiz archive.

Applications for Education
Planet Science has something for most science students and teachers. The activities, games, and lesson plans are appropriate for use in grades K-8.

Here are some related resources that may be of interest to you:
Great Science Activities from Exploratorium
Science is Fun – Home Experiments
Science Projects and Posters for Elementary Schools