Most easily viewed in landscape format, the app offers a list of videos on the left side of the screen. Click on a video to bring up its individual screen, and you'll see a video player and an in-depth explanation of the episode. Touch the video player to begin playing the video. It will switch to full-screen mode at this point, but if you want to have the video playing while viewing the companion concept notes, tap the screen again.

While the experiments and recommendations are widely targeted across the K-12 spectrum, with experiments that kids of all ages will be excited to do, the videos themselves are probably less interesting for those below the high-school level. The host is clearly addressing himself to adults (with sidenotes about running the experiments in the classroom included in many episodes), so it's likely that younger students may be bored by the commentary.

Robert Gardner: Teaching Scientific Inquiry
6-8 | Audio
A Taste of Exploratopia
3-5 | Hands-On
Sink It
3-5 | Hands-On
Brine Shrimp 1: Hatching Brine Shrimp
6-8 | Hands-On