A gloopy mess-fest for children aged 5-12 who enjoy all things slimey. Is there a secret to making the perfect slime? As a UUÂãÁÄÖ±²¥ member, register for FREE (instead of £4 per child) using the following URL: . Otherwise, please register via the ScienceOxford website entering 'UUÂãÁÄÖ±²¥member' when prompted for a discount code.