|
|
|
|
| |
|
|
| |
| |
| Objective: |
 |
Students
will understand that different teeth perform
different roles in the mouth. |
|
| |
| Materials: |
|
Knife
(for teacher's use only) |
|
Apple
cut into slices for each student |
|
Teeth
chart handout (Master
2) |
|
Science
journals |
|
Pencils |
|
| |
| Preparation: |
|
Prepare
apple slices before class - enough for one
per student |
|
| |
| Instructions: |
| 1. |
Explain that you
will be studying teeth today, and the different
jobs different teeth have when it comes to
eating. |
| 2. |
Have students get
into small groups or with a partner. |
| 3. |
Have students look
at each other's teeth (showing mutual respect
and without touching each other) and write
their observations in their science journals.
What do the teeth you can see look like?
Which teeth do the biting and tearing
of food?
Which ones grind up the food?
|
| 4. |
Hand out the teeth
chart diagram (master 2) "Teeth at Work" and
have the students read the handout and identify
the different teeth they observed in their
science journals. |
| 5. |
Give students a
chance to share with their partners or whole
class what they have discovered. |
| 6. |
Now instruct them
that you are about to conduct an experiment
that will only work if everyone follows directions
exactly. |
| 7. |
Tell them that they
are going to eat an apple slice, but they
are to do it very carefully and notice which
teeth are doing the work. No one is to start
eating before the experiment officially starts. |
| 8. |
Hand out the apple
slices and instruct no one to eat them until
the experiment starts. Remind them to pay
attention to what happens to the apple once
they start eating it! |
| 9. |
Have the students
close their eyes and keep them closed throughout
the experiment. |
| 10. |
Have the students
bite the apple slice in half and notice which
teeth do the biting. Which teeth get involved
next? What is the tongue doing? Which teeth
are the ones to finish chewing? How big do
the apple pieces feel at the beginning of
the experiment and at the end? Where does
the apple go? |
| 11. |
Keeping their eyes
closed, once they have completely swallowed
the first bite, instruct them to put the second
half of the apple slice into their mouths
and go through the process again. |
| 12. |
Now have the students
record their observation in their science
journals and compare their experiment to the
teeth chart handout. |
|
| |
| |
| |
Have
students create mouth models using teeth and
gums cut of construction paper. They can use
these models to demonstrate to a different
class the jobs various teeth play in the mouths
when chewing. They can also demonstrate the
proper care of teeth with brushing twice a
day and flossing. |
|
| |
|
|
|
|
|
|
|
