Download Grade 4 play area equals (45)(20) = 900 square feet Grade 3 play

Grade 4
Geometry & Measurement
Name___Answer Key_______
Story- The Grade 4 students have an outside play area (see below).
45 ft
20 ft
20 ft
45 ft
1) The girls say that the boys take up too much space with their ball games. They
want the area to be split into two equal parts. Show at least two different
ways how this can be done by drawing a straight line that divides the play area
into two equal parts.
one possible way
second possible way
third possible way
fourth possible way
The Grade 4 play area is 45 feet by 20 feet, and the Grade 3 play area is
40 feet by 25 feet. Whose play area is larger?
2)
Grade 4 play area equals (45)(20) = 900 square feet
Grade 3 play area equals (40)(25) = 1000 square feet
Grade 3 is larger.
Explain your thinking.
Possible response: To find the area of a rectangular space, use the area formula for a
rectangle which is area equals length times width.
Both areas have the same number of square feet, so the playgrounds cover the same area.
Grade 4
Geometry & Measurement
Scoring Guide
0
•
Question 1
•
Question 2
•
Question 2 explanation
Question 1 Score
1
2
No answer given or
answer lacks connection
to symmetry of
rectangles.
No answer given or
answer lacks connection
to comparing areas.
•
Correctly models one
line of symmetry.
•
Correctly models at least
two lines of symmetry.
•
•
Correctly answers
question (grade 3 is
larger).
No or poorly written
explanation.
•
Compares area for each
grade’s play space, but
mistake is made
calculating area of one or
both play areas.
Explanation is wellwritten, but not
connected to problem
related math work or
answer.
•
Explanation is well
written and connects to
math work or answer.
____ / 2
Question 2 Score ____ / 2
Question 2 Explanation ____ / 2
Overall Score
Name___Answer Key_______
____ / 6