If you have any other Muslim brothers (more than two, excluding you) who attend the maths session with you, you can group together after the session finishes and perform the Jumu'a prayer together, as long as Asr time didn't come.
The Khutba isn't necessary to be complex, it can just be simply an interpretation of a hadeeth, discussing the meanings in an aya etc.
If you don't have any Muslim colleagues, then try to negotiate with the teacher about the timing of the session. As jumu'a prayer has to be done no matter what. The Prophet Muhammad PBUH said:
مَنْ ترك ثَلاثَ جمعاتٍ ، مِنْ غيرِ عذرٍ ، كُتِبَ مِنَ المنافقينَ.
الراوي : أسامة بن زيد | المحدث : الألباني | المصدر : صحيح الجامع
الصفحة أو الرقم: 6144 | خلاصة حكم المحدث : صحيح
Which means that whoever leaves three Friday prayers, is written to be from the hypocrites.
And Allah knows best.