Standard 4/Middle School/Benchmark 3
Benchmark Question: How is light required to see
Focus Question: What must happen to light in order
for a person or other animal to see objects?
Students will discuss the
Coal miners wear helmets
with lights. Why is the light necessary for the job?
Sometimes it is easy to
see at night; sometimes it is not. Why?
Students will work in small
groups and conduct the following investigations that answer the question,
“What must happen to light in order for a person or other animal to see
light?” Each student will write a hypothesis before beginning the
1. Cut a 6.0 cm (2.5 inch) square door in one side of a
A. Cut a peep hole in the other end of the shoebox..
B. With the door closed, students should describe what
C. With the door open, students should describe what
they see .
D. Put a small object in the box..
E. Have one student open and close the door while
another discovers what is in the box.
Through repetition, students
will discover that they can see only when light is present.
Students will write answers
to the following questions:
- What do you see when the door is closed?
- What do you see when the door is open?
- Why is there is a difference between the
first and second question above?
(Extension: Have students use colored filters or
cellophane and observe results.)