Guidance for OCR Twenty First Century Science - Controlled Assessed Investigation

I downloaded the OCR specimen task for the controlled assessed practical investigation. I did the task as if I were a student including writing it up; then I marked it as teacher. The pdf is an annotated version of my work, showing where I think I earned the marks.

Excellent preparation for your actual controlled assessed coursework task for Additional Science of Physics GCSE.

Lots more guidance here: http://www.myphysics.org.uk/ks4cacswk.htm 

Hope you find this useful.