Why Should We Brush Our Teeth?
What you need:
2 hard boiled eggs
2 cups of dark brown soda pop
2 cups of vinegar
containers for each
prepared chart.
You can use this experiment to introduce the scientific method to your child. Start by identifying the question you want answered, possibly “What will happen to my teeth if I don’t brush them?” Make observations about the eggs. Talk with your child about the similarities between the eggs and our teeth.
They are both white; both contain calcium, which makes them hard, both have a protective covering.
Take a guess as to what is going to happen to each egg, these are your hypotheses.
Put one egg into each container of liquid and leave overnight. As you take them out the next day record your observations on the provided chart.
The soda-egg represents what happens to your teeth when you eat too much sugar and don’t brush afterward, the egg will be discolored, and possibly have some pits.
The vinegar-egg will be very fragile and soft. Vinegar is an acid and removes the calcium from the egg, just like acid in our food breaks down the calcium in our teeth and leads to cavities.
We should brush after we eat to remove anything that will harm our teeth!
Walk your child through the similarities and differences in each egg compared to the day before.
Were his hypotheses true, if not what did happen?
Does that answer your original question?
Compare them to our teeth; make sure he understands what happened to the eggs and why.
What you need:
2 hard boiled eggs
2 cups of dark brown soda pop
2 cups of vinegar
containers for each
prepared chart.
You can use this experiment to introduce the scientific method to your child. Start by identifying the question you want answered, possibly “What will happen to my teeth if I don’t brush them?” Make observations about the eggs. Talk with your child about the similarities between the eggs and our teeth.
They are both white; both contain calcium, which makes them hard, both have a protective covering.
Take a guess as to what is going to happen to each egg, these are your hypotheses.
Put one egg into each container of liquid and leave overnight. As you take them out the next day record your observations on the provided chart.
The soda-egg represents what happens to your teeth when you eat too much sugar and don’t brush afterward, the egg will be discolored, and possibly have some pits.
The vinegar-egg will be very fragile and soft. Vinegar is an acid and removes the calcium from the egg, just like acid in our food breaks down the calcium in our teeth and leads to cavities.
We should brush after we eat to remove anything that will harm our teeth!
Walk your child through the similarities and differences in each egg compared to the day before.
Were his hypotheses true, if not what did happen?
Does that answer your original question?
Compare them to our teeth; make sure he understands what happened to the eggs and why.
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