```Adding IntegersThomas, John Charles                  N. F. Simeon Voc. H. S.                                      962-2800                           Objectives:

1. The students will be able to add integers.
2. The students will be able to subtract integers.
3. The students will be able to define:
E. Sum
F. Magnitude
4. The student will be able to follow oral directions.
5. The student will be able to add and subtract integers
6. The students will be able to write a definition for adding
integers and one for subtracting integers.

Apparatus Needed:

1. Poster board. (11" x 14")
2. Cut strips of paper from the poster board of a pre-determined
length and width.
3. A ruler or a straightedge.
4. Pencils.
5. Felt tip pens to write the numerals on the adding machine.

Recommended Strategy:

I will tell each class that we are going to make an adding
machine.  We will make a machine out of paper.  This machine will add
certain combinations of integers.  (Note: The extent of the
combinations depends on the length of the scales on the "Addend"
number lines.)  Let's get the show on the road.  I will give each
student a strip of paper and a ruler.  The paper has three lines on
one side.  Turn that side face up.  We are going to divide each line
into two equal parts.  (Note: Give oral instructions as well as visual
instructions for dividing the line into two equal parts.)  Ask the
students to put a tick mark," - ", at the midpoint of each line.  Tell
students to put a zero besides each tick mark on the lines.  (Note:
Turn rulers to the metric side.)  Put a tick mark one cm (centimeter)
apart on the line in the middle.  Put a tick mark two cm apart for
each of the other two lines.  (Note: Check the students' papers for