research

1

I made some research for my history project.
I did some research for my history project.

Use do, not make, with research: ‘I did some research for my history project.’

Check our grammar lesson on do and make.

2

Our teacher asked us to do a research on sleep.
Our teacher asked us to do some research on sleep.

Research is usually an uncountable noun, so do not put a before it. Say ‘some research’ or ‘a research project’.