There is a clear line between experimenting with a homemade science kit and one that is paid for. I like both, but it is easier for children to use and be left to their own devices with the kits that come boxed up. These have all the equipment needed, usually labeled and comes with clear, distinctive and easy to use manuals for conducting the experiment.
Ah, slime. It’s the one thing that parents across the UK have been being pestered to make, so why not turn it into a science activity? For our concoction, we mixed shaving foam, PVA glue and a little bit of air freshener (fabric conditioner can work too!), to create a slime that you can swirl, stretch and crack, providing hours of fun. Try changing the quantities to see how the mixture changes, and ask the kids to explain the differences.