CK-12 Brainflex Summer Challenge. The challenge is a free program that students can use to keep their math and science skills sharp through the summer while also learning some new knowledge and gaining new skills. Students register for the program then track their skills review through the CK-12 Brainflex website. The CK-12 Summer Challenge is self-paced and students choose the subjects that they want to review.
Applications for Education
Teachers can send invitations to students to participate in the CK-12 Summer Challenge. With those invitations teachers can include suggestions for subjects to review. CK-12 also provides a template for a letter to send home to parents with suggestions on subjects for their children to review over the summer. That letter could be sent to the parents of the students moving on from your classroom this summer or to the parents of the students you're expecting to see in the fall.