Use
an old telephone book.
Distribute
different
pages from an
outdated
directory to pairs of children.
Ask
the partners to underline 40 telephone numbers.
Tell
them to add the last two
digits
in each of the 40 phone numbers (example: 6394968; 6+8=14)
Then
students construct a tally sheet
indicating
how many of each sum (from 0 to 18) they find.
One
partner uses the information to
plot a bar
graph while the other creates a line graph.
Ask
each student to check the other's
work for
accuracy.
