I walked into a certain private secondary school in port harcourt some weeks ago to make enquiries. The principal took me around and showed me facilities present. While on this, I couldn't help but notice some thing very impressive as I walked into the technical drawing room. As graduate of Engineering, with a masters, I take a lot of delight and joy in Engineering drawings and I was quite good at the course back then in the university.
On the board, i saw a topic and drawings which explained in a very pictorial manner and well concise, as I have never seen before, the sectional view of mechanical part as drawn in orthographic projections. For those of you who may understand engineering drawing, you will agree with me that the teacher is definitely grounded in his area and has what it takes to teach to have explained this with pictorial forms of the sectional planes, both the x-x plane and y-y plane.
Take a look at the picture below...