P3 Making Toothpaste at TechFest

On Tuesday 9th September a very excited P3 class visited TechFest at the Beach Ballroom in Aberdeen.  We made toothpaste by mixing bicarbonate of soda, cornflour, salt, glycerine, food colouring and mint flavouring.  We concentrated hard, worked in trios and thoroughly enjoyed being scientists.  We also found out how people cleaned their teeth in the past.