Tuesday, April 20

It finally happened

James has been wiggling a tooth for over a week.
It's the very first one, and he's excited.
We thought it would never come out!
But on the way home from the grocery store today, he exclaimed, 
"My tooth!!!  It just fell out!"
No apples, no pliers, no string tied to the door.  Just riding home doing nothing...whatever!

As I was taking a picture, I was asking James to show me his teeth...well, Bella was telling me she has teeth too...so, not to leave her out...here's a shot of her teeth too.

We have put that baby in a jar and it is now under his pillow waiting for the tooth fairy.
I have a feeling she is going to leave a nice little note and a dollar bill.  I am thinking tomorrow after coop we can go by the dollar tree for a treat, and get a brand new toothbrush too.
...make that 2 new toothbrushes.

I figured since we were focusing so much on his tooth...we should add in a mini-unit study on teeth, in addition to our regular MFW studies this week.


Reading: We've already been reading books like these this week...


and we took a virtual fieldtrip to the dentist here.  we explored what dentists and dental hygienists do, the importance of taking care of your teeth, and how good food choices and regular brushing and flossing help keep teeth healthy.


Found this info on the wonderful, marvelous, fabulous (and free!) www.homeschoolshare.com


Science and Health: Dental HygieneThe main function of teeth is to chew food.  Ask your student to show you her teeth.  Does she know where her gums are?  Show her and tell her that the gums are covering the roots of her teeth.   Humans develop two sets of teeth in their lifetimes; the first set which will consist of 20 teeth usually begins to appear at 6 months of age; the second set which will consist of 32 teeth usually begins to appear at 6 years of age. 

The second set of teeth may last your student all of her life if taken care of properly.  How does one take care of her teeth?
1.  Brushing (at least twice a day and always before bed)
2.  Flossing (followed by a rinse of water)
3.  Going to the dentist for professional cleanings twice each year

Discuss tooth decay.  Make a list of foods that are not good for your teeth (pop, fruit juice, candy, cake, cookies, honey, jelly, cough drops, popsicles, etc.)  Tooth decay is caused when food gets trapped on the tooth surface (or between teeth).  The sugars from the foods are converted into acids that eat away at our tooth enamel.  It is best to eat foods high in starch and sugar at meal time (not for snacks) when there is more salvia (spit) in the mouth.

Some facts about foods and your teeth
1.  Eating apples, carrots, and celery 
DO help remove plaque from your teeth
2.  Brushing your teeth and rinsing your mouth immediately after you eat sweets will help prevent cavities from forming
3.  Sweets are less harmful to your teeth if you eat them with a main meal rather than between meals


Science: Enamel Experiment
Discuss tooth enamel.  Explain that enamel is the thin outer layer that protects the tooth pulp and never endings inside.  It is important to keep the enamel healthy.
 For this experiment you will need:
  • a raw egg
  • vinegar
  • a glass
Procedure: 
Soak a raw egg in vinegar overnight.  The acid will soften the shell just as acid in your mouth can cause a tooth to soften (to weaken and decay).  In the morning, observe the egg.  Discuss that this is similar to what happens to your teeth.  The inside layers become vunderable (weaken and decay) when the enamel is eaten away by acid in the mouth.  Once the enamel is gone, the pulp is exposed and a toothache occurs.  It is important to keep teeth brushed so that the acids are kept under control and off the enamel.

Another similar experiment to conduct is
Stains and Your Teeth.  
You will need the following:
  • egg shells
  • six containers
  • rootbeer
  • cola
  • tea
  • coffee
  • grape juice
  • water
Procedure:
Place a small amount of liquid in each container-- one container for rootbeer, one for cola, one for tea, etc.  Label each container.  Add some egg shells to each container.  Set the containers on a table overnight.  The next day, pour off the liquids, but save the egg shells and place them back in their empty containers.  Compare the color of the egg shells from the different beakers.    What happened to the egg shells?  Why is it important to brush your teeth?

Go-along books
How Many Teeth (A Let's Read and Find Out Science book)
I Am Not Sleepy and I Will Not Go to Bed by Lauren Child
My Wobbly Tooth Must Not Ever Never Fall Out (another Lola adventure!) by Lauren Child
Open Wide! by Tom Barber



Related Printables:
My Brushing and Flossing Journal
Teeth at Work - learn the different names of kinds of teeth and color the diagram

Teeth Chant (from A to Z school)For youngers-
My front teeth are for biting.
My bottom teeth are for munching.
My pointed teeth are for tearing.
My back teeth are for crunching!
For olders-
My incisors are for biting.
My bottom teeth are for munching.
My canines are for tearing.
My molars are for crunching!

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