Apps & sites specific to science classes.
Paid iPad app: http://itunes.apple.com/app/wolfram-general-chemistry/id434841846?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/app/wolfram-general-chemistry/id434841846?mt=8&uo=4&at=10l6SU
Paid iPad app: http://itunes.apple.com/app/wolfram-physics-ii-course/id455760886?ls=1&mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/app/wolfram-physics-ii-course/id455760886?ls=1&mt=8&uo=4&at=10l6SU
Website: http://phet.colorado.edu/
Website: http://www.billnye.com/
Paid iPad app: http://itunes.apple.com/us/app/elements-visual-exploration/id364147847?mt=8&uo=4&at=10l6SU
Website: http://www.macmillanlearning.com/catalog/elearningbrowsebymediatype/LateNiteLabs
Edmodo app: http://www.edmodo.com/publisher/latenitelabs
Physical product: http://esciencelabs.com/
Website: http://www.phyfun.com/
Website: http://www.nature.com/scitable