The Invention of Toothpaste
This week we invented our own toothpaste! In our groups, we decided how much of each ingredient to put into our recipe:
- Bicarbonate of Soda
- Cornflour
- Peppermint essence
- Glycerine
- Water
Once we had made our toothpaste, we tested it against 3 other brands of toothpaste by trying to remove a sharpie stain from a tile.