Education Standards
OSPI Quadratic Instructional Task: Softball Throw
Overview
This resource was created by the Washington Office of Superintendent of Public Instruction.
Task
OSPI Quadratic Instructional Task M
Quadratics; Standard F-IF.7a, Claim 1; Standard F-IF.4, Claim 2
Softball Throw
Kelsey and Sabrina are on a fast pitch softball team
The equation models the height of Kelsey’s throw. The height of the ball, in feet, is where represents the time in seconds.
- Identify the coordinates of the vertex of the function. Show all work.
- Interpret the meaning of the vertex in this context.
Rubric
Rubric
Question Number | Standard/Claim | Description |
M | F-IF.7a/Claim 1 F-IF.4/Claim 2C | A 2-point response demonstrates full and complete understanding of the standards and claims by doing all the following:
States that the vertex represents that the maximum height of Kelsey’s throw would be 20 meters above the water after 1 second. |
A 1-point response demonstrates partial understanding of the standards and claims by doing one of the following:
States that the vertex represents the maximum height of Kelsey’s throw and corresponding time, given an incorrect vertex form. | ||
A 0-point response demonstrates almost no understanding of the standards and claims. |
A 1-point response is different from a 2-point response.