CK-12

CK-12

CK-12 is a non-profit educational site that offers learning resources for core subjects (particularly math and the sciences) to students of all ages, through well-organized text lessons, audios, videos, interactive activities and tracking quizzes. Very high quality materials – you’ll definitely want to bookmark and use this site as a teaching helper often. Suggested by Donna McCartney

Click here to go to the site!

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