When parents are desperate for new material for their kids, there is often
something available. While individual resources may not comprise a curriculum per se, any of these may help launch further independent study and/or aid in identifying an area of particular interest.
Have you checked the Gifted Homeschooler's Forum?
http://giftedhomeschoolers.org/resources/favorite-things/favorite-things-science/ Has your son done dissections?
The
Carolina company has some interesting kits/specimens.
A book which may be of interest is Campbell's Biology (a recommended text for high school AP Bio).
There are a number of virtual science labs found online, including the Y Science Laboratories by BYU/Pearson.
Hippocampus has interesting lessons, as does Khan Academy.
Neuroscience For Kids may also be of interest. Families may sign up for their newsletter.
