IXL | Math, Language Arts, Science, Social Studies, and Spanish https://www.ixl.com/high-school
IXL is the world’s most popular subscription-based learning site for K–12. Used by over 17 million students, IXL provides personalized learning in more than 17,000 topics, covering math, language arts, science, social studies, and Spanish. Interactive questions, awards, and certificates keep kids motivated as they master skills.
Independence | Antebellum reform movements | Cities in the Gilded Age | Causes of the Great Depression