Non-native speaker always mix the following combinations:
At the weekend
On the weekend
For the weekend
Over the weekend
What would be a simple explanation of the right context for each of them?
You may find the examples below useful.
During my apprenticeship, money was very tight, so I had to work at the weekend. [telegraph.co.uk]
It was a time when your team’s effort on the weekend set your mood for the week. [time.com]
To win 4-0 in the manner that we did was nice and it sets us up for the weekend. [guardian.com.uk]
There is at least a foot of snow around the lake and more fell over the weekend. [sacbee.com]