Evan Lewis

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2. Study Group
3. About calculus

AP Calculus is typically taken after taking Pre-Calculus, since it gives you some foundational knowledge needed for Calculus.

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2. Content Requests and Feedback
3. Video on Local Linearity in AP Calculus AB

Hi Anke, Thanks for reporting this! Another user has already reported this on the video, so the development team has already taken note of this. Since the focus of the video is an example of a deri...

1. Topluluk
2. Content Requests and Feedback
3. ERROR IN VIDEO - See Details Below

Hi Neil, Thanks for reporting this! Like Regina said, it's best to report video mistakes directly on the videos themselves in the future. I, however, don't believe this particular issue is an error...

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2. Classroom Tips and Tricks
3. I am having my students do missions instead of assignments. How can I view their quiz and unit test grades on the new interface?

Hi Susan, The attempts column shows how many times the students tried entering an answer. The correct column shows whether or not the student ended up getting the right answer.  So, for example, in...

1. Topluluk
2. Content Requests and Feedback
3. Important typo on the explanation

Hi Christian, Are you able to provide a screenshot of the actual problem and explanation? A link to the exercise set or article this is on would also be helpful. Based on what you've given me, I th...

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2. SAT Questions and Feedback
3. Time and type of questions

Hi Elis, The test length is determined by the College Board, so that isn't something KA can change. You do, however, have the option to give yourself more time on KA's SAT practice tests. You can d...

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2. General Khan Academy Questions
3. Need Help getting my old but still active account back but the email I always use is not fully linked.

Hi there, If you're unable to access the account and the password reset isn't working, you'll need to create a support ticket describing the issue.

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2. Study Group
3. Finding x when f'(x) = 0,

Hi Jessica, That equation isn't something that can be solved analytically. To find when f'(x) = 0, you'll need to graph f'(x) and the line  y = 0 and see where they intersect.

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2. Study Group
3. Calculus : Finding the Area of a Surface of Revolution?

Just to be clear, you are meaning the surface area of the revolved region, not the volume? I'm not very familiar with finding surface areas of revolved regions, I've mainly only dealt with volumes ...

1. Topluluk
2. SAT Questions and Feedback
3. Idea for entering in practice test scores

If she isn't able to create a college board account, you won't be able to import her scores to KA.