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iRubric: Quadratic Expressions and Equations rubric

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Quadratic Expressions and Equations Quadratic Expressions and Equations Learning Outcome: Students will be able to solve problems involving quadratic functions or equations. Rubric Code: N23B95C By mfortugno Ready to use Public Rubric Subject: Math Type: Assessment Grade Levels: 9-12

Aspect
	Exceeds Expectations 3 pts	Meets Expectations 2 pts	Below Expectations 1 pts
Understanding A quadratic expression has either a minimum or a maximum value. The vertex, y-intercept and root represent specific time and seconds of the projectile	Exceeds Expectations The student demonstrates a complete understanding of a quadratic function,, its maximum, vertex, y-intercept and roots.	Meets Expectations The student shows some understanding of a quadratic function,, its maximum, vertex, y-intercept and roots.	Below Expectations The student demonstrates little or no understanding of a quadratic expression has either a minimum or maximum value.
Application Finding the vertex	Exceeds Expectations The student correctly find the turning point -vertex- using axis of symmetry formula and then using substitution to find the maximum.	Meets Expectations The student correctly finds only the x value of the turning point- vertex- using axis of symmetry formula.	Below Expectations The student is very little or unable to find the turning point
Application Sketching the parabola to represent the projectile.	Exceeds Expectations The student correctly sketched the curve, with the correct starting height, vertex and and landing point.	Meets Expectations The student correctly sketched the parabola, with the correct vertex.	Below Expectations The student is very little or unable to sketch the curve.
Application Roots of a quadratic equation using the quadratic formula.	Exceeds Expectations The student correctly applies the quadratic formula and applies the correct positive root for the sketch.	Meets Expectations The student applies the quadratic formula but only finds one root.	Below Expectations The student is very little or unable to apply the three possible cases for the solution of the equation.