One of the illusions included in this website is stepping feet illusion. Blue and yellow feet seems to move alternatively, but they are actually moving exactly at the same speed
Use turtle animation to draw an analog clock with only second hand. You can either use turtle timer event or use time library’s sleep function to make the clock move.
Monte Carlo Methods are interesting algorithms that rely on random sampling to obtain numeric result (Wikipedia). Since today is Pi Day, we are going to design a Monte Carol method