1st Place Winner!
I remember a few months ago when my son asked yet again for soda to drink when we went out to eat. I wouldn't let him have any and he didn't understand why all his friends could have it and not him. No six year old cares about benzene, chemicals, additives, etc. A little boy just knows something tastes good and he wants more. I decided to try a different approach and talked to him about what happens to your teeth over time if you drank sugary, acidic drinks.
Note...this experiment wasn't meant at all to scare Batman but to gently guide him into making healthier choices. That includes eating plenty of fruits and vegetables instead of sugary, hydrogenated oil laden food. Also, choosing water over sugary drinks.
I showed Batman a child appropriate clip on youtube about bad teeth and asked him if he wanted to do an experiment with teeth. He thought it would be "cool" so I took the next step. I asked my girlfriend if her husband (my dentist) could get me some real teeth. I know, kind of gross but I wanted the experiment to be as authentic as possible. He was kind enough to give me six sterilized teeth in really good condition. All white, with no decay.
We were required to have each step of the SCIENTIFIC METHOD included in our project. They include:
Here goes our project.
Question: What effect does certain drinks have on teeth over time?
Hypothesis: Batman thought that soda (specifically pepsi) would show the most decay.
Material List: 5 teeth, 5 small containers with lids, 2 oz. each of pepsi, sports drink, orange juice, apple juice, and water, measuring cup, camera, kitchen scale.
1. First Batman weighed each tooth and documented the appearance of each. I put a piece of aluminum foil on the scale for the tooth to sit on.
2. Next he measured out 2 oz. of liquid for each container and put one tooth in. Each container was labeled.3. Each tooth sat in the liquid for 21 days at room temperature.
4. Each tooth was then weighed again and the appearance of each tooth was documented.
This is a picture of all of the teeth after having soaked in each liquid for 21 days. They are in order left to right: soda, sports drink, orange juice, apple juice, and water.
Graphs: Batman did two graphs. One showed the before and after weight of each tooth. For the second graph Batman asked his friends what their favorite drink was.
Results: The tooth dipped in soda showed the most decay. The weight of this tooth decreased by .44g.
Conclusion: Batman's hypothesis was correct that the tooth soaked in soda would show the most decay. Proper oral hygiene is key to protecting your teeth.
Side note: All teeth except the one soaking in water showed decay. The teeth soaking in soda and sports drink showed significant decay.
Batman did a great job on his board. He did all of the writing, coloring, and pasting. I helped with the placement of things, and typed up the headers. Batman had to talk to four judges and did a great job explaining his project.
Homeschool Science Share & Tell