Have you watched any of these interactive live sessions produced by STEM LIVE?
They are filmed on locations with scientists and the people who work there to increase science capital. You can sign up to join live sessions giving your children the chance to ask questions or you can watch the playbacks to fit in with the topics you may be teaching. Why not join in on the next session: How to Classify a Sea Monster on the 16th November - there's going to be unicorns, griffins and even sea monsters!
But don't worry if you miss any, you can watch previous sessions on demand