I find it very hard to understand new concepts if I don't have a pen and piece of paper to take notes and draw some diagrams... Unfortunately, I'm not able to r

I find it very hard to understand new concepts if I don't have a pen and piece of paper to take notes and draw some diagrams... Unfortunately, I'm not able to reproduce this experience with a keyboard and a mouse/trackpad. How do the kids learn maths or CS nowadays? I can't imagine that they do it exclusively with a laptop.