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Math
Lesson
for Pumpkin Day
Objective:
The
students will practice estimation, working with weight and
measurement, and counting in groups.

Materials

Procedure
 Begin by putting the
students into pairs and passing out the Pumpkin
Measurement Worksheet (in inches) or the Pumpkin
Measurement Worksheet (in unifix cubes).
 Each pair will then cut a
length of twine they believe will most closely go
around the circumference of the pumpkin. Have
them measure their strings and record their estimates
on their worksheets. (Measurements could be done
with tape measures or unifix cubes.)
 Measure the circumference
of the pumpkin with a string and cut it to the proper
length.
 Tape this string up on the
wall and allow each pair to compare their estimated
string to the actual string. Measure the actual string
and allow the students to record the measurement on
their worksheets. Older students may want to figure
the difference more or less than the actual length.
 Do the same process for
the height of the pumpkin. (For this step, you
may opt to not do the string. Just have the
students estimate how tall they believe the pumpkin to
be.)
 Weigh each student on the
scale have them record their weight. (It may be best
to round their weight to the nearest 5 or 10 to make
the math easier.) (If the students or you are
not comfortable with dealing with body weight, pick a
heavy item in the room such as a chair, desk, etc. to
do the same activity with. If you opt to do this,
simply cut off the bottom of the worksheet.)
 Have the students guess
how many pumpkins would = their weight (or the
selected item's weight.) Example: My weight in
pumpkins will be __________ pumpkins.
 Actually weigh the
pumpkin. Have the students figure how many pumpkins it
would take to actually = their (or the item's) weight.
Example: I weigh the same
as _________ pumpkins.
If the pumpkin weighs 5
pounds the students would count in fives until they
reach their weight. You may want to weigh your pumpkin
before you buy it so you have a pumpkin that makes it
easier for them to count by that number to reach their
weight (five or ten pounds).

Other
Lesson Ideas
 Have the students estimate
how many seeds will be in the class pumpkin. Then take
out all the seeds, put them in cups of ten seeds each.
Count by tens to find the # of seeds in your pumpkin.
 Have individual (small)
pumpkins for each pair of students instead of one for the whole
class. The measurement activities and estimation
activities could be done with these smaller individual
pumpkins.


