4.MD.3

Develop efficient strategies to determine the area and perimeter of rectangles in real-world situations and mathematical problems.

Lesson 4.MD.3

Concepts addressed:

• Develop efficient strategies to determine the area and perimeter of rectangles in real-world situations and mathematical problems.

• For example, given the total area and one side length of a rectangle, solve for the unknown factor, and given two adjacent side lengths of a rectangle, find the perimeter

• Be able to find the length of any side or the area of the shape given two characteristics of it (i.e. find the height if you're given the base and area of the shape)

Key terms for this lesson:

• Base - the bottom of a shape (usually referred to as b). This is the same length as the top of the shape (the opposite side) in a rectangle

• Height - the other sides (not the bases), usually referred to as h. The opposite sides are again equal in length

• Area formula (for square) - base (b) * height (h)

• Perimeter formula (for rectangle) - length one (L1) * 2 + length 2 (L2) * 2 (or the sum of all the sides)

This worksheet went over:

Additional practice:

• 4.MD.3 IXL

• 4.MD.3 IXL

• 4.MD.3 IXL

• 4.MD.3 IXL

• 4.MD.3 IXL

• 4.MD.3 IXL

• 4.MD.3 Khan Academy

• 4.MD.3 Khan Academy

Lesson Complete!