Visualizing the Area of a Trapezoid Formula


Visually Understanding Area of a Trapezoid in Multiple Ways

Visualizing the Area of a Trapezoid Formula

While some students are aware that they could find the area of a trapezoid by treating the shape like a composite figure, I wanted to help students better understand where the formula comes from with a visual aid. Here is the next video animation I created in my Visualizing Mathematics series: Visualizing the Area of a Trapezoid Formula.

Stage By Stage PDF File

Here is a stage-by-stage PDF file for you to grab, if you’d like:

Please let me know if you/your students found this resource helpful to better understand where the Volume of a Triangular Prism comes from!

If you’re interested in creating animations for your own math class, download Keynote here:

Check out the other animations from this series:

Visualizing the Volume of a Rectangular Prism Formula


Visualizing the Volume of a Rectangular Prism Formula

Visually Understanding Area of a Rectangle and Volume of a Rectangular Prism Yesterday, I showed the "Where Does the Volume of a Cylinder Formula Come From?" video in class and students seemed to be able to tie some of the visuals to the work they completed in class. It inspired me to try another one, this time with the volume of a rectangular prism. Here's the result of my latest exper...


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Visualizing the Volume of a Cylinder Formula


Where Does The Volume of a Cylinder Come From - Deriving Volume of a Cylinder

Visually Understanding Area of a Circle and Volume of a Cylinder Over the past year, I have been on a mission to try and make some of the formulas we use in the intermediate math courses in Ontario (Middle School for our friends in the U.S.). I think it can be difficult for math teachers to explain where formulas come from because we often think of deriving formulas algebraically. Unfortu...


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Visualizing the Volume of a Triangular Prism Formula


How to Find th e Volume of a Triangular Prism Starting With Area of the Base

Visually Understanding Area of a Triangle and Volume of a Triangular Prism About a week ago, I shared my visual animations explaining the "Derivation of the Volume of a Cylinder Formula" and Volume of a Rectangular Prism formula I used in class and students seemed to be able to tie some of the visuals to the work they completed in class. Here is the next video animation I created in my Vis...


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