Dear Olusegun D. Samuel ,

Try MIT open courseware.

Debating is a strategy that cuts across all disciplines and is a proven strategy for developing students' critical thinking and collaborative skills. Here's a link to a conference presentation on debating as a motivational strategy for students at the 16th Annual Midwest Scholarship of Teaching and Learning (SoTL) Conference, Indiana University South Bend, Indiana, U.S.A.:

Conference Paper Debating: A Dynamic Teaching Strategy for Motivating Student...

Best regards,

DFJ.

@ Peter Samuels ,

Your suggestion is gratefully welcome.

Regards,

SOD