I developed the booklet below during my work with an organisation called SSERC. They focus on developing practical work for schools. This booklet contains examples of experiments that might interest you. You should not repeat these experiments exactly - you will need to carry out your own planning, thinking about confounding variables and how you might adapt a protocol to ensure your conclusions are valid; you need to think about sample size; and many other things. But this might help you get started.

Towards the end of the booklet, I look have used the SQA Course Reports to highlight areas that are often done well by pupils, and areas that pupils find challenging - have a look at this and see how you can produce the best possible project you are capable of, learning from past experiences.

And, as always, chat with your own teacher about your plans 😀.