Maths tutoring: supportive tutor wanted

Our son Luis is attending Stadelhofen Gymi in the Fall and would really benefit from some support in math. We are looking for someone who explains things clearly and takes a patient, encouraging approach. We would prefer online lessons. The sessions should take place on a regular basis, with availability and preferred times as indicated in our profile. It would be great to find a tutor who can provide steady learning support over time. Luis speaks Swiss German and the lessons should be in German as well. Looking forward to hearing back from you. Maria