Number and Operations

Birthday Number Line

Draw a calendar line like the one shown below. Make the
space between the marks for the months about two
centimeters. Notice that January is the zero point on this line
and July through December are represented by negative integers.
February through June are represented by positive integers.

Survey your classmates to find out the month in which
each of them was born. When you have done this, record your
data onthe calendar line by putting an x above the month for
each student. If two or more students have a birthday falling in
the same month, line up the additional x's abovethe first one in
a column. Then answer the questions below based on the
information from your calendar line.

©Glencoe/McGraw-Hill Pre-Algebra

QUESTIONS

1. In which month were the most students born?
2. What number represents that month?
3. Is that month before or after January?
4. How many months from January is it?
5. Is there a month with zero birthdays?
6. On the calender line does it come before or after January?
7. What integer represents that month on the calender line?
8. How many months from January is it?