Wow, found this amazing website that is free! The group who runs this is a non-profit that simply wants to revolutionize how we learn science and math, how teachers teach, and textbook resources, videos, simulations, and examples in a free online flexible "textbook".
You really have to see for yourself and spend a bit of time browsing the site. I created an account and set up assignments. You can invite students to participate in the assignments and view their progress through the work. Seems to include a wide variety of media as mentioned above.
You really have to see for yourself and spend a bit of time browsing the site. I created an account and set up assignments. You can invite students to participate in the assignments and view their progress through the work. Seems to include a wide variety of media as mentioned above.