Khan Academy
Khan Academy: Quadrilateral Properties
Learn about the properties of quadrilaterals, parallelograms, trapezoids, rhombuses, rectangles, and squares.
Khan Academy
Khan Academy: Intro to Quadrilaterals
Sal Khan discovers attributes and features of four-sided shapes, including parallelograms, rhombuses, rectangles, and squares. [8:06]
Khan Academy
Khan Academy: Measuring Rectangles With Different Unit Squares
Sal finds area of a rectangle with different sized units.
Loyola University Chicago
Math Flix: Formula Area of a Rectangle Part 1
This QuickTime movie explains how to find the area of a rectangle. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Math Mammoth
Math Mammoth: Area of Rectangles and Rectangular Shapes
Demonstrates how to find the area of a rectangle using unit squares. [9:53] CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it. CCSS.Math.Content.3.MD.C.7.d Recognize area as additive.
Other
Corbettmaths: Names of Quadrilaterals Video 2
Video tutorial discusses 6 types of quadrilaterals: square, rectangle, rhombus, parallelogram, trapezium, and kite. [3:21]
Loyola University Chicago
Math Flix: Formula Area of a Rectangle Part 3
This QuickTime movie explains how to find the area of a rectangle and demonstrates this by showing how to use the area formula. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying...