William Smith helped most of us with basic maths and science problems years ago. Here he is once again bringing memories back.
These types of lessons on the learning channel helped inspire a lot of people and encouraged them to take a career in science and maths. What a teaching legend.
His fingers were always black from the overhead projector pen.
William Smith awarded the Order of the Baobab in Silver for his contribution to the teaching and demystification of mathematics and science.
Read more: Who remembers? Fun days at Milky Paradise