Geometry

Geometry (X)

Shoshone Parfleche | Wyoming's Native Americans

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Students will gain an understanding of the Shoshone tribe while learning about the Shoshone Parfleche from the WyomingPBS video.

Skate-Off: Final Round, Inez vs. Rimm

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In this video segment from Cyberchase Inez competes in a rollerblading competition against Rimm, a skater for Team Hacker. Just before Inez skates, Hacker changes the shape of the field. It still has the same perimeter, but it is much narrower. The CyberSquad decides to compare the perimeter and area of the three different fields they've had to skate on to make sure it is a fair competition.

Building a Fence

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In this Cyberchase video segment, Harley convinces Harry to help put up a fence in their grandmother's backyard. With no instructions other than to put up the fence in the shape of a rectangle, Harry must figure out how to do this with different lengths of fencing. He breaks the problem down by adding up different combinations of pieces and then drawing a diagram to figure out where to place the pieces.

Wallpaper Tessellations | Cybechase

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In this video segment from Cyberchase, Harry decides to wallpaper his living room walls. He takes some measurements and then goes to a store to buy wallpaper, but he finds out the cost is much too high. Since he still wants to cover his walls, he realizes he can use some leftover scraps of wallpaper he finds in the trash to create a tessellation on his wall.

Predicting the Angle of a Bouncing Ball

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In this Cyberchase video segment, the CyberSquad is trapped in a cave. Inez and Digit have the key to escape, but there is an enormous block of ice in their way. In order to get the key to Jackie and Matt, who are on the other side of the cave, the CyberSquad decides to slide the key along the ice until it bounces off the cave wall and travels to the other side. Since they do not want to risk losing the key, they decide to use a small model. While testing the various aiming points, the CyberSquad learns about angles of reflection.

Representing Volume of Right Rectangular Prisms with Unit Cubes

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Use your spatial reasoning skills to calculate the volume when given a 3D figure. This video focuses on a right rectangular prism and shows you how unit blocks can help you visualize, then calculate the volume. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

Three-Dimensional Printing

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Discover how design software runs three-dimensional printers by translating 3D shapes into triangles. This video focuses on the composition of 3D polygons and introduces the idea of printing in three dimensions as stacking thin layers of material, taking math out of the classroom and into real world problem solving.

Describing Distributions: New Balance

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Investigate how compiling sales data helps New Balance determine its production plans. This video focuses on how a graphical representation of data can help predict what quantity of each shoe and size to produce in order to meet consumer demand and maximize sales, taking math out of the classroom and into real world problem solving. This resource is part of the Math at the Core: Middle School Collection.

Perimeter and Area of Non-Standard Shapes: Area of a Kite

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If you were going to make your own kite out of a piece of cloth, then knowing the area of the kite would be helpful, right?

Area and Perimeter of Polygons: Area of a Strangle Quadrilateral

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Some quadrilaterals are oddly shaped so break it up into shapes for which the area is more easily determined.

Shapes on the Coordinate Plane: Quadrilateral

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In this example we're given the coordinates of the vertices and asked to construct the resulting polygon a quadrilateral). This is fun!

Perimeter and Area: The Basics

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This geometry primer explains the basics of perimeter and area.

Perimeter and Area of Non-Standard Shapes: Area of a Trapezoid

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A trapezoid is a cousin of the parallelogram. However, in a trapezoid only two of the opposing sides are parallel. Here's how to find its area.

Animated Geometry Terminology

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Review basic geometry terms as a series of animations set to music. This video focuses on definitions relating to angles, triangles, similar figures, congruent figures, and parallel lines cut by a transversal to build mathematical reasoning skills. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

Wall of Fire: Cylinder

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Watch as the "Wall of Fire" in the National Museum of Mathematics shows the relationship between two and three-dimensional figures. This video focuses on the 2D cross sections that can be observed when a laser projects through a 3D cylinder. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.