Fancy some new GCSE physics and astronomy learning materials on the topic of redshift?

I am a third year physics undergraduate, doing my independent research project on the teaching of physics and astronomy at GCSE level. The designing of learning materials has lead me to investigate the impacts of the exam board systems in England and Wales in the hope to formulate an alternative that benefits teachers and students alike.

I’d like to ask science teachers to answer the questions below. In return for answering these questions, I’ll send you the learning materials I am working on at the end of my project for teaching redshift! Thank you!