Helper systems
An example of the helper system can be a corner on the blackboard where learners can write down their questions concerning tasks or learning goals, other learners (with answers) can help.
Another helper system is the expert list. On a wall in the classroom you can find a list with either tasks (e.g. book p.36, no. 6) or learning goals (e.g. I know the character traits of geometric fields/figures).
On a second column (behind the tasks), learners who know the answers can put their names as experts, so other learners can ask for their help .

Helping relationship
You can adopt technologies, but you have to be aware of the helping relationship: virtual classrooms can be used (e.g. a post on a classroom wall with private or public answers). Social media where you cannot participate is not allowed.
Weaker learners can ask their peers for help instead of yours, they can talk in a private, non-assessing situation with a classmate. Observe these situations to make sure the outcomes are correct. You can do this by setting up moments during the lesson (e.g. 15 minutes before the beginning of a new topic) when weaker and stronger learners can meet and exchange help about a specific topic.