Khan Academy: Measuring 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.

What is the area? Because there is only one problem here with a detailed explanation below, consider projecting this as an all-class warm up. Learners examine a rectangle split into 12 squares. They know that each unit is three...

Count unit squares and partial unit squares to find the area of shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive step-by-step hints.

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.

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....

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

In this lesson, students units use different units to measure the same object.

In this video lesson, Sal uses different units to measure the same object, centimeters and rectangles.

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.