That would be impossible if you mean a different hint for every question in the Math. For every quiz, there are at least 10 different questions; making a video for all of them will be impossible. ...

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3. Hint videos

Some topics take an extremely long time to answer questions. I still agree though. Maybe if the hard ones were slightly less time-consuming there could be 7 questions in all of them. 

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3. Questions per topic

I think this hasn't been added because Khan Academy will have to refilm (or maybe edit) all their currency videos. It may not take too much time for one country, but it will take a lot of time for ...

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3. Would you like to change the money unit for your course to a different currency?

I think most of the grammar courses are appropriate for third graders. Maybe some of the subjects may be too hard. You can also use https://www.khanacademy.org/ela/cc-3rd-reading-vocab/xaf0c1b5d701...

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3. There are several categories of courses available

Another example is: equivalent ratios quiz also there is permutations quiz The equivalent ratios quiz literally has "in the real world" in its title.

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3. Mathematics - Real life application

I think that already exists. Look at https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/cc-6th-equivalent-ratios/v/understanding-equivalent-ratios it has a real-life exam...

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3. Mathematics - Real life application

If more resources for students are added it will be interesting, but Khan Academy is a simple site. You just watch videos and do quizzes and unit tests. Most people can learn most of Khan Academy's...

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Welp, it has been five years and nothing has changed.

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3. KACP Revival Proposals