"on" or "in"

[Dawood Usmani]

Hi teachers!
Is this right?
What things do you use on/ in a hot day? (There is a list on the page for children to pick out words or picture.)
Best regards!
Dawood

[beascarpetta]

What things do you use on a hot day?

(There is a list on the page for children to pick out words or pictures.)

hope this helps.

[Snowcake]

I am wondering if it isn't better to say
'which things...'

beascarpetta, what do you think?

[beascarpetta]

I am wondering if it isn't better to say
'which things...'

beascarpetta, what do you think?

well,to be quite honest I gave it a passing thought , but since most ESL sites have both I decided to let it pass.

[engee30]

well,to be quite honest I gave it a passing thought , but since most ESL sites have both I decided to let it pass.

What things do you use on a hot day? could have been a caption, or the title of a new unit being introduced, so there's no need to use which unless you are given instructions to do an exercise by choosing items from the items provided on that particular list:

Look at the pictures below and choose - which things do you use on a hot day?

[Snowcake]

That's what I had in mind, but I wasn't sure. Thanks, Engee.

And Thanks, beascarpetta.