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author: kim lifton

kim lifton
  • how to study | video post

    do you have questions about how to study? maybe you aren’t sure how to be productive after school or how to get good grades. good news: this video has all the study hacks you need!

  • how to take notes | video post

    note taking: no one ever really teaches you how to do it, and yet it’s a huge part of learning and getting good grades. check out our latest video on how to take notes! seriously, good notes are a game changer.

  • ap calculus review: shell method

    the shell method is a technique for finding the volume of a solid of revolution. just as in the disk/washer method (see ap calculus review: disk and washer methods), the exact answer results from a certain integral. in this article, we’ll review the shell method and show how it solves volume problems on the ap…