Remember Arnold’s digital textbook initiative that we discussed in June?

Well, a review of 16 of these newfangled `books’ came out yesterday, and the materials – all free — are posted online.

It looks like they’re all for high school math and science: geometry, algebra II, trigonometry, calculus, physics, chemistry, biology/life science and earth science.

Ten of the textbooks reviewed covered at least 90 percent of the state content standards for the subject, and four met all of them. Only three of the 16 really bombed the review. (Step it up, Earth Systems!) Read the rest of this entry »