Imperial War Museums are an amazing set of places you can visit to learn all about World War II. They have the Duxford Air Museum, Churchill War Rooms and HMS Belfast. For ALL Home Ed families they give free entry to children and one adult. A day out for the price of an adult ticket is amazing and the most expensive is only £16 an adult.
Well worth a visit. All you have to do is visit http://www.iwm.org.uk/visits/iwm-duxford/groups-schools and fill in the Self Guided Visit forms for each attraction.