Creating rectangles with a given area 2 (Full video) (Math Strategy)

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Video

Creating rectangles with a given area 2 (Full video)

Khan Academy

Description: Lindsay creates a rectangle that has the same area (but different side lengths) than a given rectangle.

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Aligned Standards

Creating rectangles with a given area 1 (Full video)

Intro to Area and Unit Squares (Full video)

2 Content Standards are aligned with this strategy

3.MD.C.5
3.MD.C.6

Major StandardsSupporting StandardsAdditional Standards

Standard 3.MD.C.5

Recognize area as an attribute of plane figures and understand concepts of area measurement.

Part of Major Cluster 3.MD.C

3.MD.C.5.A

A square with side length 1 unit, called "a unit square," is said to have "one square unit" of area, and can be used to measure area.

3.MD.C.5.B

A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.

Prerequisites for 3.MD.C.5

1st Grade

1.G.A.2

Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

2nd Grade

2.MD.A.1

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Upcoming Standards for 3.MD.C.5

3rd Grade

3.MD.C.6

Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).

3.MD.C.7.D

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

3.MD.D.8

Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.

5th Grade

5.MD.C.3

Recognize volume as an attribute of solid figures and understand concepts of volume measurement.

5.MD.C.3.A

A cube with side length 1 unit, called a "unit cube," is said to have "one cubic unit" of volume, and can be used to measure volume.

5.MD.C.3.B

A solid figure which can be packed without gaps or overlaps using "n" unit cubes is said to have a volume of "n" cubic units.

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