Speech of our school mathematician Mr. A. Tzelepis entitled ? The bicycle with the square wheels?

An open speech of our school mathematician Mr. A. Tzelepis was made in our school amphitheatre on 12/12/2019 within the framework of the Algebra Laboratory activities. The speech was entitled ?The bicycle with the square wheels?.

The presentation notes that follow are in the Greek language, in which the speech was made.