Khan Academy: Find Area With Partial Unit Squares

A more challenging set of worksheets, third graders are required to measure area by counting whole and partial unit squares. Students will realize that two partial blocks make up one whole block. Each shaded figure is on a square unit grid.

Models how to find the area of a shape on a grid that has different angle sizes by counting both square and partial units. [3:16]

Find the area of shapes by counting the unit squares inside them. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints on how to find area....

Sal finds area of a rectangle with different sized units.

In this exercise, students practice find the perimeter of shapes by counting unit squares. Students receive immediate feedback and have the opportunity to watch a video tutorial, get hints, and try questions repeatedly.

Third graders measure area by counting unit squares inside a rectangle.

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

Step by step, this video lesson [4:34] will show you how to add up the number of squares that cover an object in order to find the area of a figure. It is 4 of 7 in the series titled "Finding Area with Squares."...

Calculate the perimeter of a rectangle from its side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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...