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iRubric: Square Roots and Cube Roots rubric

iRubric: Square Roots and Cube Roots rubric

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Square Roots and Cube Roots 
Squares and Square Roots
Rubric Code: K243682
By flobe32
Ready to use
Public Rubric
Subject: Math  
Type: Assignment  
Grade Levels: 6-8

Powered by iRubric Squares and Square Roots
Rubric for Summative Assessment
  Excellent 4

1 pts

Good 3

3 pts

Fair 2

5 pts

Poor 1

7 pts

1-2) Perfect Square & Perfect Cube Definition

Define and give several examples of a perfect square and cubes. What is the square root of a perfect square? What is the cube root of a perfect cube?
Excellent 4

Definition is correct and includes: 1) product of an integer with itself, 2) square root of perfect square is an integer; 3) gives several correct examples, and 4) grammar, syntax and punctuation are correct
Good 3

Definition is basically correct and includes 1 of the first 2 items in the Excellent column. Examples are correct.
Fair 2

Definition is basically correct, but the examples are wrong. OR the Definition is incorrect or missing, but the examples are right.
Poor 1

Neither the definition nor the examples provide any evidence that the student understands the concept of perfect square.
3-7) Squaring and Square Roots

What is the relationship between squaring and square roots? If I square the square root of a number what do I get? If I take the square root of a number squared what do I get? Demonstrate what you say in words with examples.
Excellent 4

Student describes the relationship as an inverse relationship. Student recognizes that squaring the square root of a number yields that number. Student recognizes that taking the square root of a number yields that number. The grammar, syntax and punctuation are correct.
Good 3

Student description recognizes that square roots and squaring are inverse operations. If the work inverse is not used, it is clear that the student understands the concept. The examples are correct.
Fair 2

Student description demonstrates understanding that square roots and squaring are inverse operations, but is unable to give examples. Student is unable to explain relationship, but examples demonstrate some understanding.
Poor 1

Neither the explanation nor the examples provide any evidence that the student understands the relationship between squaring and square roots.
8) Completing Sentences Problem

If the area of a square room were 90 square feet, what would be the dimensions of the room?
Excellent 4

Student remembers: 1) area is the length times width, 2) in a square the length equals the width, 3) the length of a side of the square room is the square root of 90, and 4) the student expresses the result in feet.
Good 3

Student sees the relationship to square roots and gets to the right answer but forgets the units.
Fair 2

Student attempts the problem and shows a diagram or some work that demonstrates effort.
Poor 1

Student does not try to solve the problem.




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