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Promethean Flipchart: Applications of Squares and Rectangles February 18, 2011

Posted by Edward Deleon in : algebra, geometry, graphing calculators, math, media, Uncategorized , 1 comment so far

Frank Lloyd Wright’s architecture is a dramatic display of geometry, and his Fallingwater house is also a great way to explore quadrilaterals. In particular, rectangles and squares.

In this video-based Promethean Flipchart, we explore Fallingwater to learn more about why homes and other interior spaces are in the shapes of squares and rectangles, as opposed to other quadrilaterals and other shapes.

We review the properties of squares and rectangles.

We explore the properties of rectangles using the TI-Nspire (all keystrokes are clearly shown).

We have Geogebra versions of these hands-on explorations.

Through these activities and explorations, students get a real-world understanding of the following geometry concepts:

In the process students learn about design and architecture.

This Flipchart includes nearly twenty minutes of video and all the media resources to supplement your core instruction for a unit on squares and rectangles. The video in this Flipchart is from Media4Math’s Geometry Applications video series.

You can find this Flipchart here.

Note: You do not need to have a Promethean White Board to use our Flipcharts. You can download the Active Inspire Software free. Follow this link:

Promethan Flipchart: Applications of Right Triangles February 7, 2011

Posted by Edward Deleon in : algebra, geometry, graphing calculators, math, media , add a comment

In our newest Flipchart we turn to sailing as an application of right triangles. It turns out that sailboats rely on the same principles that allow airplanes to fly. The difference in air pressure on the sail creates a forward momentum, regardless of the direction of the wind.

This provides an opportunity to review right triangles, since it also turns out that the ideal sail is in the shape of a right triangle.

Students explore the area of a triangle for two given side lengths with varying angles between the two sides. We provide TI-Nspire Touchpad and Geogebra video support for this activity.

Through this Flipchart students will explore the following concepts:

You can find this Flipchart here.

Note: You do not need to have a Promethean White Board to use our Flipcharts. You can download the Active Inspire Software free. Follow this link:

Promethean Flipchart: Triangles February 2, 2011

Posted by Edward Deleon in : geometry, graphing calculators, math, media, Uncategorized , add a comment

There are many  applications of triangles in the real world, but finding a structure that encapsulates triangle properties and theorems is a little more challenging. Enter the Eiffel Tower.

This engineering marvel is also a textbook study in the properties of triangles and this video-based Promethean Flipchart goes through a detailed analysis. We start with a review of the properties of triangles.

Students are then introduced to the properties of triangular trusses used as architectural support.

Trusses, as used in the Eiffel Tower, allow for a rich exploration of the properties of triangles. We include hands-on explorations using the TI-Nspire graphing calculator and Geogebra.

Through this Flipchart students will explore the following concepts:

You can find this Flipchart here.

Note: You do not need to have a Promethean White Board to use our Flipcharts. You can download the Active Inspire Software free. Follow this link:

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