I don’t know much about this cause, having just learned about it from Tom Leinster today, but it sounds like a good one and it’s important to get the word out fast.
The Free High School Science Texts project aims to compile free (both in the sense of without cost and the sense of unrestricted by copyright) High School science texts. They have a good chance to get their books used in South African schools, providing a major test ground — if they can do a ton of proofreading this week.
After all, it’s one week before classes start. I’m sure we’re all looking for ways to procrastinate