AoPS was started by Richard Rusczyk, who participated in national math competitions in high school and went to Princeton. AoPS wrote a set of math texts for Algebra to Calculus, has online, interactive classes for high school math and computer programming, they also have a series of elementary math books called Beast Academy in cartoon format.
The online classes meet once a week for 1.5 hours. The students have homework which consists of about 10 problems per week and reading the textbook. The courses run for 13 weeks and cost around $340. The series of courses include the standard pre-algebra to calculus series, number theory, probability, group theory, math competitions and computer science. New classes sections start every month and run year round.
Stanford EPGY
(GiftedandTalented.com)
GiftedandTalented.com (formerley Stanford EPGY) is a computer based math and language arts for K-8 and high school. The online math class is starts in 1st grade and goes through Algebra 1. The online class is self-paced and adaptive. The format of the class is a short three minute video on a new topic, then a series of problems for the student. If the student answers the problems correctly, then move on to the next topic and watch a new video. If the student misses a problem, they are given more problems to work or hints to help them solve the problem. They can also go back and re-watch the video. The course has a well thought out curriculum that follows curriculum standards. The software tracks the student’s progress in detail. The pace of the course can be adjusted by the parent.