Fill
a jar with jellybeans.
Ask
the students to write on a slip of paper their estimates of how many
jellybeans are in the jar.
They
must sign the slips and deposit them in a folder.
Challenge
kids to think of an easy way
to discover
the answer by thinking in terms of weight.
Use
a scale that indicates either grams or ounces.
Have
different children do the computations and record their findings on the
chalkboard.
Follow
these steps:
Pour
the beans on the scale and weigh
them.
Weigh
a small paper cup. Fill it with beans and weigh it again.
Subtract
the weight of the cup to find the weight of the beans.
Count
the beans in this small sample.
Divide
the weight of all the beans by the weight of the sample.
Multiply
that answer by the number of beans in the sample to find the number of
beans in the jar.
The
game winner wins the jar.
PS: Consider doing more fun printable
math activities.
