This week Khan Academy announced 2,500 new math practice problems specifically aligned to the Common Core, with the help of a team of teachers and content specialists who've vetted and reviewed each item. Teachers can find them in this new Common Core map that outlines each Common Core math standard and links them to practice problems. No longer limited to multiple choice, the new problems will ask students to write equations, create graphs, and fill in tables.
To accompany these exercises, Sal Khan has completed over 100 new videos--with a new twist: he's getting "Common Core aligned" as well. Where his previous videos focus on solving math problems using popular, procedural-based methods, these new ones emphasize a more visual approach to help students conceptualize problems and develop deeper understanding of where solutions come from. (He's got some ways to go however, as teachers continue to point out pedagogical flaws in his videos.)
By the end of the 2014 school year, Khan hopes to have a library of longer videos that break down Common Core concepts. For now, here’s Sal giving a sneak peek of what these will look like.