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Math Lesson
for Pizza Day
Objective:
The students will combine fractions
to make a whole.

Materials

5
large circles (about 12" in diameter).
These will be "pizzas". Cut the
circles into the following fractions (which will pose
as "slices" of pizza):
Circle #1  cut in half
Circle #2  cut in thirds
Circle #3  cut in fourths
Circle #4  cut in sixths
Circle #5  cut in eighths
Make sure the "slices" of each circle are
even. This will make 23 "slices" of
pizza. If there are more than 23 students in the
class, adjust the fractions so each student will have
one slice of pizza. For example, do two or more
circles cut in half.

Pizza
Math Worksheet

Procedure

Mix
up all the "slices" of pizza which have been
cut out ahead of time. Pass out the slices so
each student has at least one slice of pizza.

Direct
the students to move about the room and find other
students with the exact same size slice of pizza as
theirs. They should then all gather together
with their similar size slices to put together and
make a whole "pizza".

Allow
the students time to find the other students in their
group.

Once
these groups have gathered together, pose a series of
questions. For example, "How many people
are in your group to make up a whole
pizza?" "Which group has the biggest
pieces of pizza?" Which group has the
smallest pieces?" The students may
complete the Pizza
Math Worksheet at the same time.

Introduce
and/or review the terms one half, one third, one
fourth, etc. If appropriate, illustrate writing
fractions.

As
an extension, have older students combine groups
together and lay their slices on top of each
other. They may then discover relationships
between fractions, such as 1/4 + 1/4 = 1/2.

Other
Lesson Ideas

Give
each student a circle piece of paper and manipulatives
to pose as pizza toppings. For example, unifix
cubes for green pepper, beans for mushrooms, pennies
for pepperoni, etc. The students may then write
math equations to coincide with the pizzas they
create.

Graph
the students' favorite toppings.

Assign
slices of pizza a price and have the students complete
money equations.


