New Mexico State University
Atlantean Dodgeball
Develop ratios within sporting games. Class members watch a video about dodgeball and see how coaches compare the scores. Pupils then work with ratios to compare the scores throughout the tournament. Using their knowledge of ratios, they...
New Mexico State University
Bad Date
Get the best ratio for a good date. The class watches a video where dates are rated based on the ratio of words spoken. Pupils then use the ratios in the video along with other given ratios to find equivalent ratios. Finally, they...
New Mexico State University
Ratey the Math Cat
Find a perfect way to recognize rates. The class first watches a video that emphasizes the word per when referencing a rate. Pupils then use their knowledge to create their own rates via station activities. Finally, individuals use...
Mathispower4u
Direct Variation Applications
What would I weigh there? A video uses the relationship of the weight of an astronaut on Earth and the moon to create a direction variation equation. Using the created equation, pupils find the weight of any astronaut on the moon.
PBS
Math with Jake: Frequencies and Pitch
Be an octave above the rest. A musician explains how to write music in different time signatures. An interesting resource continues to demonstrate ratios using the pitch of musical notes and hertz. Pupils use a pitch table and determine...
PBS
Beating Usain Bolt
Beating Usain requires a head start. With a race against Usain Bolt as a background, the resource introduces a system of linear equations. A quick activity uses tables to determine whether a head start is enough for the presenter to win...
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
Scale City — Scale Models in the Real World
Good things come in miniature packages. An interesting video from the Math at the Core MS: Ratios playlist introduces the collection of miniatures in the Kentucky Gateway Museum. Scholars use base-10 blocks to create scale models before...
PBS
Recognize and Represent Proportional Relationships between Quantities: Ratio, Proportion, Cross Multiply, and Divide
Review three video clips for one major concept. The resource contains three short clips to introduce the idea of ratios and proportions and how to solve a proportion. After watching the video, partners use their noses to push pom poms...
TED-Ed
Why Can't You Divide by Zero?
Why doesn't dividing by zero result in infinity? Scholars view an engaging TED-Ed video that describes why division by zero is not allowed. It explains how division is related to the multiplicative inverse, and why 1/0 cannot be equal to...
Scholastic
Study Jams! Proportions
Join Zoe and Sam as they use proportions to budget money for their Green Earth Club. Watch as they set up and solve a series of proportions using cross multiplication and division. A great resource that brings together prior knowledge of...
Government of Alberta
Learn alberta.ca: Math Interactives: Rate/ratio/proportion (Video Interactive)
The use of rate, ratio, and proportion is illustrated in this video about action photography. An additional interactive element allows students to explore equivalent ratios equivalencies through enlarging and reducing images to compare...
Khan Academy
Khan Academy: Algebra: Proportionality Constant for Direct Variation
This video demonstrates how to set up an equation for direct variation and solve for the variable "k" which represents the constant of proportionality. [1:44]
Khan Academy
Khan Academy: Algebra: Direct Variation Application
This video demonstrates how to solve a word problem involving a direct variation. It shows how to set up a linear equation for a directly proportional relationship and solve for the constant of proportionality. [2:02]
Khan Academy
Khan Academy: Writing Proportional Equations
Writing an equation to describe the relationship between the number of scoops in an ice cream cone and the price.
Khan Academy
Khan Academy: Graphing Proportional Relationships: Unit Rate
Video tutorial demonstrates how to graph the equation of a line that represents a proportional relationship given a unit rate. [4:30]
Khan Academy
Khan Academy: Graphing Proportional Relationships From a Table
Explore how to graph the equation of a line that represents a proportional relationship given a table. [1:10]
Khan Academy
Khan Academy: Graphing Proportional Relationships From an Equation
Video lesson shows how to graph the equation of a line that represents a proportional relationship given an equation. [3:08]
Khan Academy
Khan Academy: Solving Ratio Problems With Tables: Example 1
Presents several examples of ratio tables and asks questions about the equivalent ratio values. [5:05]
Khan Academy
Khan Academy: Interpreting Graphs of Proportional Relationships
Learn how to read and understand graphs of proportional relationships.
Khan Academy
Khan Academy: Ratios and Proportions: Understanding Proportions
This video shows how to determine if a given proportion is true or false.
Sophia Learning
Sophia: Constant Rates of Change and Proportional Relationships
This video lesson provides examples of tables with proportional and non-proproptional relationships but have a constant rate of change.