In science, we’ve been learning about our teeth. The students could tell me many things that they already knew about teeth, like we should brush them each day. But why should we brush them? This is the question we’ve been exploring. Like all good scientists, we made an experiment to help us see why we need to brush our teeth- especially after we eat or drink sugary things. Here is the worksheet that we use to make predictions, observations, and conclusions: Egg-Cellent Observation Worksheets!
To start, we learned the word “enamel”. The outside of our teeth is made of enamel, which is hard and white. To begin our experiment, we took 3 eggs (hard boiled of course!) and decided that the white shell of the egg is JUST like the white hard enamel of our teeth. We put water in one cup (made sure to label it) and put one egg in that cup. We put Coca- Cola in one cup (made sure to label it) and put one egg in that cup. And lastly, we put Coca-Cola in another cup, but BEFORE we put the last egg in that cup, we covered it in toothpaste.
We used our worksheets to write down our predictions. What would happen to the egg in the water? What would happen to the egg in the Coke? What would happen to the egg in the Coke but that had toothpaste on it? Students wrote down what they thought.
(We’ve been using our clip boards on the carpet during these observations, and they are LOVING it!) The first day we used the prediction worksheet to write what we thought would happen to each egg. The next day during science time, we checked back on our egg-speriment 😉 We related the eggs back to the enamel of our teeth and pulled each out of the cup to see what they looked like. Here was the water egg:
And the Coke egg:
And the egg in the Coke that was covered in toothpaste:
We use the observation worksheet to write down what we see and notice. Are there cracks? What color is it? What is different? We repeat this process all week and on Friday, the eggs basically look the same. We use the conclusion page to write what we found: Sugary drinks and foods will decay our teeth and turn them brown! It can even weaken our teeth like it did to the shell. But, if we brush our teeth 2 times a day, we can protect them and keep our enamel white!