This is a set of guiding questions and materials for creating your own lesson plan on introducing the midpoint formula.

What is half of 11?
- Use a number line to locate half of 11.
- Introduce the term midpoint.
- Make a connection to a segment of length 11 units.
What happens to the midpoint if we move this segment one unit to the right?
Suppose we had started at this location, how could we have found the midpoint?
What are the coordinates of the point between points (3, 1) and (8, 1)?
What are the coordinates of the point between points (-3, 1) and (8, 1)?
What are the coordinates of the point between points (2, 3) and (2, 7)?
What are the coordinates of the point between points (2, -3) and (2, 7)?
What are the coordinates of the point between points (2, 3) and (8, 1)?
What are the coordinates of the point between points (x₁, y₁) and (x₂, y₂)?

8.5.1 - The Midpoint Formula

Successful Mathematics: North Carolina Common Core Math 1 Item Bank, Nagy-Lup, p. 91, problems 1-17.
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