4.MD.3 - About the Math, Learning Targets, and Rigor

Grade 4 Measurement and Data

4.MD.3

Full Standard

Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

 

Measurement Topic

This standard is reported on the report card in these quarters as follows:

4th Grade Students Learning 4th Grade Standards
Quarter 1 Quarter 2 Quarter 3 Quarter 4

 

 

 

Report Card Measurement Topic: Demonstrates understanding of measurement and geometry.

3rd Grade Students Learning 4th Grade Standards
Quarter 1 Quarter 2 Quarter 3 Quarter 4

 

 

 

Report Card Measurement Topic: Demonstrates understanding of measurement, data and geometry.

 

Learning Targets

  • Explain the area formula.
  • Explain the perimeter formula.
  • Use area formula to solve problems including unknown length or width problems.
  • Use perimeter formula to solve problems including unknown lengths or width problems.
  • Subdivide shapes into rectangles to solve problems with area and perimeter.

 

About the Math

The area of a rectangle is the region inside the rectangle. The formula for area is A = l x w. Students can find a missing side if they know the length of one side and the area for the figure. Students need to use the relationship between multiplication and division to solve problems involving finding the missing side. The perimeter of a rectangle is the distance around it. The formula for finding perimeter is P = l + w + l + w or P = 2 l + 2 w. Students can find the missing side using the perimeter and the known side. Students need to remember that there are two sides that have the same length or width. Students can build on standards taught in 3rd grade to subdivide a shape into rectangular pieces to find area and perimeter. Focus for instruction should be understanding the concepts of area and perimeter and not just knowing the formulas. Essential vocabulary for this standard includes: area, perimeter, length, width, unit, and square unit. 

 

 

Progression of Standard within Grade 4

This progression informs how to develop the standard within the grade level. This progression is provided by HCPSS Elementary Mathematics.

Progression Throughout Year
Quarter 1 Quarter 2 Quarter 3 Quarter 4
   

 

  • Explain the area formula.
  • Explain the perimeter formula.
  • Use area formula to solve problems including unknown length or width problems.
  • Use perimeter formula to solve problems including unknown lengths or width problems.
  • Subdivide shapes into rectangles to solve problems with area and perimeter.

 

Progression of this Standard Across Grades

This progression is informed by the Achieve the Core Coherence Map Links to an external site.. Information is not the complete standard.

Progression Across Grades
Grade 3 Grade 5
  • Determine the unknown whole number in a multiplication or division equation (3.OA.4)
  • Relate area to the operations of multiplication and addition (3.MD.7)
  • Perimeter of polygons  (3.MD.8)
  • Relate volume to the operations of multiplication and addition and solve real world and mathematical problems involving volume (5.MD.5)

 

 

Back to Top