We have been learning about teeth. We carried out two investigations. In the first investigation, we wanted to find which liquid would cause most damage to our teeth. We put half an eggshell into each of four glasses, one filled with water, one filled with vinegar, one filled with cola and one filled with coffee. After a few days we checked to see what had happened. The vinegar caused most damage while the water did no harm to the eggshell. The coffee and cola just stained the eggshells.
We then wanted to find out how flouride toothpaste protects our teeth. We put one eggshell into a glass filled with vinegar and before putting another eggshell into a second glass, also filled with vinegar, we covered it with flouride toothpaste. After the weekend, we checked the eggshells. As expected, the eggshell without toothpaste had been completely ruined by the vinegar but the eggshel covered in toothpaste was less damaged. We now know how important it is to brush our teeth every day!
In Art. we made Yarn Monsters!