Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Students can get free help with mathematics, biology, physics, chemistry, economics and more. Parents are encouraged to have their daughter/guardian sign up on Khan Academy for help. This is a great way for students to get extra practice on difficult concepts or simply to get more information . Many of our students use Khan Academy frequently. Visit the Khan Academy website and sign-up today!