an old telephone book.
pages from an
directory to pairs of children.
the partners to underline 40 telephone numbers.
them to add the last two
in each of the 40 phone numbers (example: 639-4968; 6+8=14)
students construct a tally sheet
how many of each sum (from 0 to 18) they find.
partner uses the information to
plot a bar
graph while the other creates a line graph.
each student to check the other's