Let's meet in the middle. Given two points on the coordinate plane, pupils use the interactive to find the midpoint. The interactive provides a graphical display of the midpoint and the midpoint formula with the coordinates of the endpoints substituted.

Concepts

midpoint formula, midpoints, line segments, bisection, coordinate plane

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Additional Tags

math

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Instructional Ideas

• Challenge the class to find an endpoint if given one endpoint and the midpoint
• Ask groups to determine how to use the explanation of the midpoint formula to find a point that is one-third from one endpoint

Classroom Considerations

• Class members should be comfortable working with rational numbers

Pros

• Reveals the correct answer when students select the wrong one
• The supplemental materials contain additional examples

Cons

• None

Common Core

HSG-CO.A.1 HSG-GPE.B.6