Budding scientists took part in a STEAM (science, technology, engineering, art and maths) session which was filmed by the BBC.
The sessions, which are for babies, toddlers and primary school children, have been run for the past seven years by Sandra Beale from her home in Saffron Walden.
The Easter STEAM session, which took place earlier this month, was filmed and broadcast by the BBC, and was well attended by local children aged two to eight.
Sandra said: "The experiments included the layers of the sea, oil slicks and marine life, magnetic suspension, coloured volcanoes and floating water."
The sessions were started to entertain Sandra's middle child, who was nine months old at the time, and have grown over the last few years with some sessions held at Saffron Walden Museum and Cambridge Science Centre.
Sessions take place every Monday from 9.30am to 10.30am, and on a Wednesday at 1pm to 2pm.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here