In fact, in common with many others at that time, much of his original research was put into his lecture courses and only through that source was it known. Timerding described Christoffel's teaching, this description is quoted in:
Sa katunayan, sa mga karaniwang may maraming mga iba sa oras na iyon, marami ng kanyang orihinal na pananaliksik ay ilagay sa kanyang panayam kurso at lamang sa pamamagitan ng source na ito ay kilala. Timerding inilarawan Christoffel ng pagtuturo, ang paglalarawan ay quoted sa: