Determine critical points in the flight of a soccer ball. Pupils use an interactive resource to find the vertex and x-intercepts of the graph of the trajectory of a soccer ball after being kicked. Scholars investigate the trajectory based on a light and a hard kick.

Concepts

parabolas, graphing quadratics, quadratic functions, quadratic applications, quadratic equations, vertex, axis of symmetry

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Additional Tags

math

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Instructional Ideas

• Lead a discussion on the important point to find while graphing a quadratic function
• Take a video of a trajectory using an actual soccer ball and model the flight with a quadratic equation

Classroom Considerations

• Class members should know the terms axis of symmetry and vertex
• Must set up a free account to access CK-12 interactives

Pros

• Shows the correct answer if students select the wrong one
• Includes an open discussion question that is more conceptual

Cons

• None

Common Core

HSF-IF.C.7.a