This site offers two sections - a game section and an activities section. The games section offers 25 online games for students to play independently, whereas the hands-on activities section offers 13 learning activities that students can do with the supervision of teachers/parents. This is a great resource to learn about plants, animals, and Earth Science!
Try Engineering is a site that hosts lesson plans and games designed to get students interested in engineering. The lesson plans, 114 in all, are arranged according age and engineering topic. The lesson plans can be downloaded as PDFs.
BBC Knowledge Explainer: DNA is a short video that uses animation to visually explain DNA. The video explains the form and function of DNA. A short explanation of how DNA is a part of so many things around us.
A virtual gaming world built around Science! Students can create an avatar and explore various virtual islands with activities based in "health, aeronautics, genomics, environment, engineering and more." Students can visit the Virtual World as a tourist, or sign up to edit their avatar, chat with other players, and save their progress. Signing up is free, however, students will need an email to sign up and confirm their email. Visiting as a tourist, students do not need an email or to sign up.