Pupils from 16 Hillingdon primary schools took part in activities including learning a song in sign language, drama workshops, fitness testing and making slime, during a two-day event.
The 10 and 11 year olds were taking part in taster sessions at Uxbridge College in a host of subjects which included science, engineering, health and social care, sport and drama.
Around 300 children each took part in nine workshops at the Uxbridge Campus on 5 and 6 July, which finished with a visit from Mad Science, an educational company which hosted activities and a performance.
Representatives from the company showed the children how to make slime mixing the chemical borax with liquid PVA.
The event was organised by Uxbridge College and Hillingdon Council, and Brunel University provided student ambassadors to help out.
The guest of honour was The Mayor of Hillingdon Councillor Catherine Dann, who came along on Friday afternoon to meet the children and see the Mad Science show.
Michael Farley, Vice Principal of Uxbridge College, said: "It has been great fun for everyone, including all the volunteers from Uxbridge College and the universities.
"We really hope it will inspire the children to think about staying on after the leaving age - while it must seem like light years away to our Year 6 visitors, you are never too young to start thinking about making the best of your education."
Anne Newton, Deputy Director of Education and Children's Services at Hillingdon Council, said: "It goes without saying that making sure all Hillingdon's residents get a good education is a top priority, as is keeping our young people healthy, safe and supported.
"This kind of event is a winner for everyone - it helps achieve those aims while keeping our young people entertained. I wish I'd had a chance to go along and make some slime!"
London West Aimhigher, which targets groups who are under-represented in Higher Education, provided funding for the event, which was free to the children who were provided with lunch and goodie bags.