Khan Academy: Intro to Area and Unit Squares

Models how to find the area of shapes that have only right angles by covering them with square units. [4:17]

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

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.

This learning module from Khan Academy outlines how a line plot is developed from a set of data and how to interpret it in a short video. Students can then practice reading and plotting points on a line using interactive exercises.

Sal Khan discovers attributes and features of four-sided shapes, including parallelograms, rhombuses, rectangles, and squares. [8:06]

Explains how to make unit fractions by first dividing wholes into equal parts. [4:15]

Sal finds area of a rectangle with different sized units.

This is an introductory video to multiplication using arrays and repeated addition to visualize the concept.

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.

Models how to create a line plot from a table of data and then interpret it. [4:00]