Hello, Allan!
This is Minji Won who is taking a Online TESOL class of you.
I would like to ask you to re-check the test i took for Module 3.
You can refer to the test as below.
I guess, you can find the check points what you stated on the "teachers comment" in my answer.
Please check again and make sure about my score.

Thank you.

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9 Imagine you are going to present the structure “how many/how much” in class. How would you explain the difference between when to use ‘how much’ and when to use ‘how many’? 0.60 / 0.70
Student's answer
Both “how many“ and “how much” are used to ask an amount or number of something. But the big difference between “how many” and “how much” is what kind of nouns could be placed behind them. In case of “how many”, countable nouns such as student, friend, apple, etc. may come along with. For example, “How many students are in the classroom?”, “How many apples did you buy?” .On the other hand, “how much” may be used with uncountable nouns such as time, money, water, food, etc. For example, “How much money do you have?”, “How much time do you spend on studying?”.

Correct answer
Teacher's comment
Good answer, but you could have also mentioned 'countable' and 'uncountable' nouns.