I take it you mean 7 year old? Try the BBC Schools site. Lots of interactive actitivites for all sorts of history topics. Another one is a search engine called topmarks.co.uk. Type the period in history in the search box and it will direct you to other places suitable. You can also choose the key stage (KS1 is up to year 2, KS 2 is 7-11) so the sites are suitable for the age group.