I have learnt to think of all the problems and do a mind map before trying to solve the problem.
I am always a person who doesn't write or think of all the problems first before thinking of solution, i always focus on only the problem, then immediately solve it, so when the problems are solved, more problems will normally appear causing more trouble. Through D&T lesson, I've learnt to write or at least think about the problems and other problems that may happen before trying to solve it. I find it very useful for me.

Mind map on school bags

Mind map on Hand phones
I have also learnt how to draw diagrams like boxes in 3-D form.
I normally draw squares and boxes in 2-D form as it is not a must to draw in 3-D in primary school, and the teachers normally do not focus on drawing 3-D boxes. So my drawing is not really good, but through the lesson, i grasp some of the techniques to draw 3-D boxes better. I find that through more practice, and I'm working on it to make it better.

Drawn by me for the first time

Drawn by D&T teacher (MR NG)

Drawn by me after seeing Mr Ng's drawing, not much improvements, but trying.
I have also learnt the meanings of Design & Technology and how to design items.
I always thought that this kind of lessons are to design new things, and we will learn about technology, but it think I'm wrong. I've learnt that technology is like from the times with analog technology to wire technology and wireless technology. Then design means that we observe or study, find out the problems and find the solutions.
I've learnt a lot from the D&T lesson.

Teacher teaching us to improve the designs we make.