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iRubric: Area & Perimeter of Triangles rubric

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Area & Perimeter of Triangles 
Measuring and calculating the area and perimeter of a triangle.
Rubric Code: UX2BX53
Ready to use
Public Rubric
Subject: Math  
Type: Assignment  
Grade Levels: 6-8

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  4

4 pts

3

3 pts

2

2 pts

1

1 pts

Picture of Triangle

4

Picture is drawn neatly and all measurements are included and labeled correctly
3

Picture is drawn, either the measurements or the labels are left off
2
1

Only picture is included.
Area of Triangle

4

Calculation is correct, work is shown, and correct label is included.
3

Calculation is correct, work not shown, correct label on answer.
2

Calculation is correct, work not shown, and wrong/missing label.
1

Incorrect calculation, work may or may not be shown, wrong/missing label.
Perimeter of Triangle

4

Calculation is correct, work is shown, and correct label is included.
3

Calculation is correct, work not shown, correct label on answer.
2

Calculation is correct, work not shown, and wrong/missing label.
1

Incorrect calculation, work may or may not be shown, wrong/missing label.
Difference of Two Triangles

4

Difference for Area & Perimeter between the two triangles is calculated correctly, work is shown, and correct label is included.
3

Calculation is correct, work not shown, correct label on answer.
2

Calculation is correct, work not shown, and wrong/missing label.
1

Incorrect calculation, work may or may not be shown, wrong/missing label.
illustrating proof

4

formula is stated, diagram is drawn, labels are shown,accurate explanation is given accompanied by proper illustration of the concept.
3

formula is stated, diagram is drawn, labels are shown,explanation is given,accompanied by some illustration of the concept
2

formula is stated, diagram is drawn, labels are lacking or incomplete, explanation is incomplete, no illustration of concept
1

only formula and diagram are given accompanied by inaccurate labeling.



Keywords:
  • area, perimeter, triangle

Subjects:






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