Sparks were flying for pupils in South Oxhey as science fever gripped the area.
Warren Dell Primary School played host to students from five other schools - Central, Laurance Haines, Beechfield, Chater, Berrygrove and Highwood schools.
The students came together to compete in the Science Challenge Cup, which is held at a different local school each half term.
They used their scientific knowledge to build bridges, drop eggs without breaking them and shoot corks long distances using Alka-Seltzer.
Jenny Morley, Warren Dell headteacher, said: "It teaches problem solving and working as a team and the children enjoy it."
This term’s events were judged by Northwick Ward councillor Ty Harris.
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