In high school, the focus in math classes turns to college and career prep through advanced algebra, calculus, test practice, and lots of real-life problem-solving. Whether teachers need a tool to flip the classroom or one to engage students in collaboration, these apps and websites go above and beyond static math practice by offering the customization, tracking, and differentiation students need to be prepared for learning beyond high school. A few also focus on making math relevant, both to students' future career paths and to social issues that'll spark interest and discussion.
