???
6/13/11
Do Now:
How does a cow see?
17L
6/13/11
Standard 6b:
Students know that for an object to
be seen, light emitted by it must be
detected by the eye
Objective: Students will explain how
the eyes see light and how the brain
creates the image
17R
Today’s Agenda
1.Do Now: How does a cow see?
(15 min)
2. Notes: Vision has 5 steps (20 min)
3. You Do (10 min)
4. Vision Project Directions (10 min)
5. Finish Rough Draft and Begin Final
Draft of Vision Project (65 min)
Do Now: How does a cow see? (page 63)
C
A
D
B
Look at the cow eye and
the parts that are labeled.
Write a 4-5 sentence
paragraph describing how
the parts of the eye work
together so that the cow
can see the grass it eats.
17L
E
Do Now: How does a cow see? page 63
C
A
B
D
ANSWER: The white light strikes the
green grass, which reflects the green
light waves. The green light passes
through the CORNEA (A) and the PUPIL
(C). The IRIS (B) opens and closes to let
more light in or to keep too much light
out. The green light then passes
through the LENS (D) and gets focused
onto the RETINA (E). The cones absorb
the green light.
E
???
Do Now:
Inside the Cow Eye
6/13/11
Standard 6b: Students know6/13/11
that for an object to be seen, light
emitted by it is detected by the eye
Objective: Students will explain how
the eyes and brain work together to
see an object
Notes: Vision has 5 steps!
You Do:
1.
2.
3.
17L
17R
Notes: Vision has 5 steps
3. The blue
doughnut
REFLECTS the blue
light waves out
and into his
cornea, pupil,
and lens.
5. Homer’s
brain
receives
the signal
from the
optic
nerves. It
turns the
image right
side up. 
4. Homer’s lens FOCUSES the light onto the
retina. The image is upside down. The
retina changes the light into electrical
signals and sends them to the brain by the
17 R optic nerves.
You Do #1
1. What happens to the
white light that shines on
the white flower?
2. What parts of the eye
does the light pass through
to get from outside the eye
to the back of the eye?
Eye (Retina)
Visual Center
of the brain
Optic Nerve
3. What does the retina
do with the light?
You Do #1
1. What happens to the white light
that shines on the white flower?
The white light strikes the white
Flower. It is reflected back out and
into the eye.
2. What parts of the eye does the light
pass through to get from outside the
eye to the back of the eye?
The light passes through the cornea,
pupil, lens, and onto the retina.
Eye (Retina)
Visual Center
of the Brain
Optic Nerve
3. What does the retina do with
the light?
The retina has rod and cone cells
that absorb the light and turn it
into an electrical impulse. This
electrical impulse is sent to the
brain through the optic nerve.
Since we don’t want to be like
Homer…we will stop talking about
eating donuts, and start talking
about fruits and veggies!!!
What is your favorite fruit or vegetable???
Choose a fruit or veggie that is the color of
one of the 7 colors of the spectrum.
Vision Project: How do I see???
Objective: Students will explain how light, their
eyes, and their brain work together to allow
them to see their favorite fruit or vegetable.
On page 17 R, we took notes on how Homer sees
his donut. Now it is your turn to explain how you
are able to see your favorite fruit or vegetable.
Due Date: Thursday/Friday (June 16/ 17)
Notes: Vision has 5 steps
3. The blue
doughnut
REFLECTS the blue
light waves out
and into his
cornea, pupil,
and lens.
5. Homer’s
brain
receives
the signal
from the
optic
nerves. It
turns the
image right
side up. 
4. Homer’s lenses FOCUS the light onto the
retina. The image is upside down. The
retina turn this image into electrical signals
and sends them to the brain by the
17 R optic nerves.
Project Requirements:
Please copy on page
18R in notebook.
1. Include DETAILED information about each of the 5
steps of vision (from the light source to the brain.)
POINTS
35 information.
2. Include
bothPOSSIBLE=
pictures and written
3. All
information needs to be correct and based
GRADE:
on pages 38-64 in the textbook and/or our
5= 31-35
 1L-17R in the notebook.
notes
from pages
4. Include
10 vocabulary
words from the
4 = 25-30

wall. Underline them.
3word
= 20-24
5. Organize the information and pictures on the
2 = 13-19
 to understand. Use all white
page
so it is easy
space,
spelling 
and punctuation.
1 = 12correct
or below
18R
Points:
/15
/5
/5
/5
/5
You have CHOICES of what you will make!!!
1. Poster—explain the
5 steps with pictures,
arrows, and paragraphs
2. Comic Strip—explain
the 5 steps in a comic
strip format
3. Fictional Story with
illustrations—write a story
with a setting, characters,
plot, & pictures that
explain the 5 steps of
vision
Please don’t forget:
• Title (make it funny!)
•Name, Date, Period
•Drawings or pictures
•Make your project
correct and complete
1.Decide if you are making a poster, comic
strip, or writing a story
2.Decide on what fruit/vegetable you will use
3.Complete your rough draft
Wednesday’s Agenda:
•Do Now (5 min)
•Study Guide for test
(10 min)
•Work on final draft of
project (40 min)
Thurs/Fri.’s Agenda:
1. Share and turn in
project(10 min)
2. Unit 10 Test (70 min)
3. Preparation for frog
dissection (40 min)
Vision Project Rough Draft
1. I will make a _________. (poster, comic strip, or story)
2. The fruit or vegetable I will use is ________.
3. My rough draft
Directions:
• Please quietly work on your rough draft. When you are finished, I
will stamp it. Those with a stamp will leave class on time today.
• Then begin the FINAL DRAFT on a white paper that I will give you.
• You will have 40 min. in class on Wed. to work on the final draft.
• The final draft will be due on Thurs/Fri. before the Unit 10 test.
HOMEWORK:
FINISH YOUR FINAL DRAFT OF THE PROJECT!!!
• Please review the project requirements on page 18R in notebook.
• This power-point is also on the school website!!!
• HAVE FUN WITH THIS PROJECT, BE CREATIVE, AND SHOW ME ALL
YOU HAVE LEARNED ABOUT LIGHT AND VISION!!!! 
18L