Thanks for your question.
I would say, as well as paying attention in class and studying the material that the teacher covers with you it is also very important to look at the rest of the world with a scientist’s eye.
When you see something happening ask “Why?” and then when you answer the question, ask “why?” of the answer. It’s very rare that people can get through more than 3 “why’s?”
Asking these questions makes you think about the world and the rules that govern the behaviour of things in the world. If you’re interested then this will further your interest.
You should also pay attention in maths – it’s amazing how a working knowledge of the processes you learn in maths helps with every other science.
I hope this helps.
Firstly I have to say that you should pay attention in your classes! With that part it should be automatic for you to ask questions to your teachers. This goes triple if you don’t understand or only half understand what they’re talking about!
You may even reach the point where your teachers don’t know the answers to the questions, and that’s when things get really exciting!