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2

Yes the instructor can do these things, but a lecture is not nessecary for these things to happen. Why not read the textbook outside the classroom and then come to class to work on problems, like office hours in class.
– math_lover
Commented Sep 2, 2015 at 22:48
2

Answering students' questions is not lecturing.
– Anonymous Physicist
Commented Sep 2, 2015 at 23:22
@AnonymousPhysicist, it isn't, but a lecture certainly is a meeting where this should happen.
– vonbrand
Commented Sep 3, 2015 at 0:27
1

@JoshuaBenabou, that is called "flipped class".
– vonbrand
Commented Sep 3, 2015 at 0:28
1

@JoshuaBenabou: That might make a great separate question on this site.
– user1482
Commented Sep 3, 2015 at 3:07

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Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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