好色导航

 

 

 

 

Khan Academy is an organization on a mission. They are a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.

All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. Khan Academy's materials and resources are available to you completely free of charge.

 

 

Learnzillion provides videos of the common core strategies that should be used to teach the Common Core Standards as well as videos with guided practice problems for the students. Good for Teachers, Parents and Students!