New Mexico State University
Overruled!
It is all a matter of feet. Scholars first watch a video about measurement and conversions. While watching the video and with additional practice, pupils determine that proportional relationships create a straight line through the...
Corbett Maths
Maps Scales
For I have miles to go before I truly understand map scales. By watching a video, scholars learn about map scales. They see how to determine actual distances on a map using the scale and how to calculate the map scale.
New Mexico State University
Scale Ella
Develop a sense of scale. After watching a video about scaling up and scaling down objects, the class participates in a discussion around scale factors. Pupils make a connection between scaling using division and scale factors between...
PBS
Proportional Scaling
It is not as simple as scaling. MIT researchers explain that a micro engine cannot just be a proportional scaling of a working larger engine. The Math at the Core: Ratios resource compares the proportions involved with the surface area...
PBS
Human Tree: Dilations
Look at dilations exponentially. Using a fractal from a museum exhibit, the installment from the Math at the Core: Ratios series introduces the term dilation. The presenter points out that dilations can make images either smaller or...
PBS
Human Tree: Ratios
Create a personal tree. By visiting an exhibit at the National Museum of Mathematics, the resource introduces the idea of fractals. The exhibit takes an image of the person and creates a tree by repeating scaled images on the shoulders...
PBS
Formulas for Circle Area and Circumference: Simple as Pie
Calculating circumference is as easy as pi times diameter. A short video explains how to measure pie tins using the diameter. It also describes the relationship between diameter and circumference. Using the knowledge, scholars consider...
PBS
Scale City — Scaling up Recipes and Circles in the Real World
What a great big skillet you have. The resource introduces the class to the world's largest stainless steel skillet. The class creates a model of the skillet and a typical 12-inch skillet and compares the relative sizes of their areas....
Corbett Maths
Similar Shape Volumes
More power to you if you can calculate volumes. Viewers of an informative YouTube video learn about the volumes of similar three-dimensional figures. They see how figures with sides that have a scale factor of n have volumes with a scale...
Corbett Maths
Similar Shapes Areas
Just how similar are the areas of similar figures? An educational YouTube video describes how to determine the areas of similar figures. Given the area of one figure and the measurements of corresponding sides of each figure, viewers see...
Corbett Maths
Similar Shapes Sides
Scale up a lesson on similarity. Young mathematicians watch a video that investigates the sides of similar figures. They see how to calculate missing sides from the given measures using scale factors.
PBS
Real-Life Math | Estate Appraiser
Real estate is all about location, location, location—and perhaps a little bit of math. A set of two videos has real estate appraisers describe the work that they do. Scholars discuss how mathematics plays a role in these jobs to...
Math Antics
Proportions
Equivalent ratios lead to proportions. The video provides the definition of a proportion and provides examples of proportions. Using real-world examples, the resource shows how to solve for unknown quantities in proportions using the...
PBS
Pbs Learning Media: Real Life Math: Woodworker
Listen to a master craftsman explain many of the ways that mathematics is used in woodworking, including number operations; geometry; ratios and proportions; and measurement. In the accompanying activity, students will draw a scale...
Loyola University Chicago
Math Flix: Proportion Similar Figures
This QuickTime movie applies the concept of proportion to similar geometric figures. As you watch and listen to the teacher and students interact it helps clarify the thinking behind applying this concept. Allow loading time.
Math Mammoth
Math Mammoth: Scaling Figures and the Scale Ratio
Explains what a scale ratio between two figures means and how to use it to calculate unknown side lengths. [8:31]
Virtual Nerd
Virtual Nerd: What Is a Scale Drawing?
Scale drawings make it easy to see large things on paper. Watch this tutorial to learn all about them. [3:54]
Sophia Learning
Sophia: Comparing Objects to Scale Models
Measure the length of an object using a scale model.
Sophia Learning
Sophia: Scale and Similar Figures
This video tutorial [5:22] explores how objects are represented in a scale drawing to show they are similar. Assess learning with a quiz.
Sophia Learning
Sophia: Scale Factor and Surface Area of Similar Figures: Lesson 4
This lesson will discuss the relationship between scale factor and surface area of similar figures. It is 4 of 4 in the series titled "Scale Factor and Surface Area of Similar Figures."
Virtual Nerd
Virtual Nerd: What Is a Scale?
Scale is used to represent the relationship between a measurement on a model and the corresponding measurement on the actual object. View this tutorial and learn about scale factor. [4:20]
Imagine Learning Classroom
Learn Zillion: Lesson Video: Identify Scale Factors Using Rectangle Side Lengths
In this lesson, you will learn to identify scale factors by exploring the side lengths of rectangles. [4:52]
Loyola University Chicago
Math Flix: Scale: Drawing
This QuickTime movie introduces scale in drawings and uses several examples to find the actual dimensions of locations. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.