A math professor tries to correct his mistake ....Hilarious!

Professor Matthew Weathers teaches mathematics at Biola University (California) and often enjoys playing cool jokes on his students, especially on April Fool's Day.

Once again, in 2017, the professor carried on his well-known tradition and pulled off another prank during one of his math classes when he "accidentally" made a mistake by using a marker on his projector screen.

Find out who helped the professor solve the problem and repair the damage ...Fantastic!