Khan Academy – Over 3,200 educational videos. Good place to review math lessons.
BBC Bitesize Math – Try to make sense of numbers here with information on calculations, equations, measurements and shapes.
Grade 8 Math Practice – Grade 8 math skills are organized into categories. You can move your mouse over any skill name to see a sample question.
MathsMaster – More math videos.
Math.com – Pre-algebra practice.
Planet Foss – Take science photos. Share your pictures. View photos from other students.
Popular Science – Archive of 140 years of Popular Science magazine issues. Each issue appears just as it did at its original time of publication, complete with period advertisements. It’s an amazing resource that beautifully encapsulates our ongoing fascination with the future, and science and technology’s incredible potential to improve our lives.
BBC Bitesize Science – Want to know about the details that make up all living things? You’ll find out that they deal with energy, chemical and physical properties.
neoK12 – Interactive diagrams for life sciences, the human body, physical sciences and earth & space.