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Middle (X) - Geometry (X) - Streaming (X)

Predicting Travel Time Using Line Graphs

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In this Cyberchase video segment, Harry wants to visit his grandmother. He decides that the cheapest way for him to get there is to travel by unicycle, but he wonders if he can get there before dark. Using a line graph, he tries to predict the amount of time it will take to travel the twenty miles, assuming he travels at a constant speed. Once he sets out on his unicycle, he charts his progress on a new line graph. After the first hour he appears to be ahead of schedule, but he is not able to keep up the pace and soon finds himself falling behind.

Calculating Rectangular Area | Cyberchase

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In this video segment from Cyberchase, the CyberSquad must measure two differently-shaped parcels of land to determine which has a larger area. The CyberSquad uses tarps, fence posts, and finally a grid made out of rope to count squares and determine the area of each parcel.

Scale City: Greetings from Sky-Vue Drive-In

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Greetings from Sky-Vue Drive-In takes students on a tour through the history of drive-in theaters and a visit to one that's still open and thriving in Winchester, Kentucky. Looking at shadows through the drive-in movie projector introduces the relationship of a shadow's size to its distance from the light source.

Volume of Prisms: Volume of a Rectangular Prism - Fractional Cubes

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To find the volume of a rectangular prism, divide it into fractional cubes, find the volume of one cube, then multiply that area by the number of cubes.

Prisms with Quadrilateral Faces

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In this video from KCPT, watch an animated demonstration of finding the surface area of rectangular and trapezoidal prisms. In the accompanying classroom activity, students do two hands-on activities: they calculate the surface area of an object in the shape of a rectangular or trapezoidal prism and design and construct a rectangular or trapezoidal prism with a surface area of 24 square inches. To get the most from this lesson, students should be comfortable calculating the area of parallelograms. Prior exposure to rectangular and trapezoidal prisms and to surface area is helpful.

Area of a Trapezoid

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Learn about the characteristics of a trapezoid and how to find its area in this video from KCPT. In the accompanying classroom activity, students develop the formula for the area of a trapezoid by decomposing it into smaller, more familiar shapes. 

This resource is part of the Math at the Core: Middle School collection.

Analyzing its Geometry and Energy Efficiency | Treasures of New York: "Hearst Tower"

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Students solve a real-world mathematical problem involving the area of a triangle and learn about how energy conservation is applied to architectural design using video from Treasures of New York: Hearst Tower. Utilizing text-dependent discussion questions and classroom activities called “teaching tips,” students have an opportunity to take a deep dive into mathematics, STEM content and the arts.

Area of a Triangle: Relation to Rectangles

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Explore the relationships between the area equations for rectangles and triangles. This video focuses on modeling the area equations for a rectangle and triangle and talks how base and height differ from length and width.

This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers and is part of the Math at the Core: Middle School collection.

Monkey Around

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Uncover the secret behind the puzzling Monkey Around exhibit at the National Museum of Mathematics. This video focuses on the properties of rotations and challenges your critical thinking skills. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

What's a 360?

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In this video segment from Cyberchase, Harry is snowboarding and wants to do a move on his snowboard known as a "360." He is not sure what exactly a "360" is, but a snowboard instructor teaches him about angles and snowboard moves. Harry finally creates his own snowboard version of a "360."

Proportional Scaling

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Examine some of the complexities and complications inherent in the development of a micro engine. This video focuses on how MIT researchers have to consider proportions comparing volume and surface area when factoring heat loss, taking math out of the classroom and into real world problem solving.

Determining Surface Area with Unit Blocks

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Use your spatial reasoning skills to calculate the surface area 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 surface area. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers. This resource is part of the Math at the Core: Middle School collection.

Calculating Volume: Tunnel Construction

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Investigate some of the mathematical challenges Boston engineers had to deal with during the Central Artery Tunnel Project (the "Big Dig"). This video focuses on the irregular shape of the casting basin and the volume calculations required to make the casting basin work, taking math out of the classroom and into real world problem solving.

Slope and House Construction

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Discover how math is required for quality construction when a Master Carpenter shares his experience and expertise. This video focuses on explaining slope as rise over run and shows how slope comes into play when building homes to take math out of the classroom and into real world problem solving. This resource is part of the Math at the Core: Middle School collection.

Escaramuza: Coordinates, Reflection, Rotation

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Using footage from a real-life equestrian event, draw a two-dimensional diagram and learn to reflect a representation of it on a coordinate graph in this video from Center for Asian American Media. This resource is part of the Math at the Core: Middle School Collection.

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