Year 4's Science 'Eggsperiment'

This week in year 4, the children have been developing their understanding of teeth and how we can protect them. We discussed the importance of brushing our teeth twice a day and the good choices we can make in our diet to stop our teeth from decaying.

As scientists, the children asked a very important research question: does toothpaste actually protect our teeth? 

To find out, each class have conducted an experiment were eggs were placed in a jar of vinegar. One egg was covered in toothpaste to protect it and the other had no toothpaste - this was our independent variable as this is the part of the experiment that we changed. 

Later in the week, we'll be exploring if the toothpaste helped protect the eggshell or not. The potential differences in the two eggs will be our dependent variable, as this will be the part of our experiment that we measure. 

"I predict that that the egg with no toothpaste on will be more damaged than the egg with toothpaste on." Caden, Larch

"I predict the egg in the vinegar will soften and dissolve." Lukas, Birch

I wonder if any of the children in year 4 can remember some of the controlled variables that we had in our experiment to ensure that it was reliable.

We'll make sure to share the results with you as soon as we have them!