Khan Academy: Creating Rectangles With a Given Area 2

Given a rectangle with specified dimensions, third graders are prompted to create a new rectangle with the same area, but a different perimeter. This challenges learners to think about perimeter and area in a new way. Use...

Lindsay creates a rectangle with a given area.

Practice finding the area of rectangles by counting unit square. Create rectangles with a given area by covering unit squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...

Lindsay from Khan Academy finds the missing side length on a rectangle when given the area of the rectangle. [3:03]

Sal finds area of a rectangle with different sized units.

Sal creates and interprets bar and picture graphs. Includes a video, transcript, and question and answer section. [4:57]

Sal uses different units, standard and non-standard, to measure the same object. Includes a video, transcript, and question and answer section. [2:53]

Sal finds area of a rectangle with different sized units. [3:43]

Lindsay finds the area of a rectangle both by counting unit squares and multiplying side lengths.

Conceptualize what area is by calculating the area of a rectangle by using unit squares and the area formula. [3:21]