Hi, can anyone recommend free online resources similar to Alcumus, but for pre-calc and calc? My DD11 is finding Alcumus fun, so I'm gathering information about similar resources for when she gets through geometry (probably later this year). I know of online pre-calc and calc classes that are fee-based, but wonder whether there are alcumus type of practices for free...

Probably not as fun as Alcumus, but IXL and Khan Academy both have precalc, and Khan has calc.

Ohio State has a free mooculus (calculus) course - https://mooculus.osu.edu/; accessible through coursera as well.

I can't say how it compares to Alcumus though or on the fun element, but I know kids who loved it.

EdX has a pre-calculus course. I think it's through U Delft. I think edX has some pre-calculus courses and others for free as an alternative to Khan and IXL. Coursera probably has other free math courses as well.

MIT OCW is also an excellent source of free courses. While most of the offerings are first-year college courses, some are designed for high school students:

http://ocw.mit.edu/high-school/