MinutePhysics
Why It's Impossible to Tune a Piano
Pianos can't be perfectly tuned - it's a mathematical fact!
3Blue1Brown
Music And Measure Theory
How one of the introductory ideas in a field called "measure theory" can be thought of in terms of musical harnomy and dissonance.
SciShow
This Fish Has a Serious Case of the Blues
There are a lot of brightly colored fish in the world, but lingcod, which are usually brown and white, can sometimes end up quite blue, and not just on the outside.
SciShow
Big Idea: Gunpowder
Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.
MinutePhysics
Why It's Impossible to Tune a Piano
Pianos can't be perfectly tuned - it's a mathematical fact!
TED-Ed
TED-ED: Making sense of irrational numbers - Ganesh Pai
Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or disrupt a sacred ritual? No, Hippasus's transgression was mathematically...
Curated Video
Testing Graphing
New ReviewA video entitled "Testing Graphing" which shows how to use a graph to test if ratios are proportional.
Curated Video
Similar Figures Lengths
New ReviewA video entitled "Similar Figures Lengths" which shows how to use proportions to find side lengths in similar figures.
Curated Video
Compare Ratios
New ReviewA video entitled "Compare Ratios" which shows how to convert units so that two ratios can be compared.
Curated Video
What Is a Debt-To-Income Ratio?
Howcast - Learn about debt-to-income ratio in this Howcast finance tutorial with expert Gregory McGraime.
Curated Video
Learn how to apply Ratios in 3 Mins!
Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...
Curated Video
Ratios and Proportions - Math Coach Corner - Test Your Knowledge!
In this video, we’re diving into **ratios and proportions* with four thought-provoking questions. 🔢 *Here’s what we’ll cover:* ✅ Finding the value of a ratio: Is 1/10 the correct value for 1/2:1/5? ✅ Checking for proportional...
Curated Video
Writing and Solving Proportions
In this video, Mrs. C breaks down what a proportion is and shows you three easy methods to solve for a missing value: ✅ Mental Math – Spot patterns to find the missing number quickly. ✅ Multiplication – Solve when the variable is in the...
Curated Video
Identifying Proportional Relationships
In this video, I’ll show you *two easy methods* to determine whether two ratios (or even a whole table of values) are proportional: ✅ *Simplifying Ratios* – Reduce each ratio and compare! ✅ *Cross Products Property* – Multiply across and...
Curated Video
Ratio Tables - How to Find Missing Values with Patterns & Ratio Values | Math Defined | 7.RP.A.1
In this video,we’re diving deep into **ratio tables**—an essential math skill that will help you solve real-world problems with ease! Whether you're comparing pencils to notebooks, sugar to flour, or even inches to feet, we’ve got you...
Curated Video
Ratios. How to write, interpret and find their value
In thid video, we break down the concept of ratios and how they help us compare two quantities. You'll learn: ✅ *What a ratio is* and how to write it in three different ways (word form, colon, and fraction). ✅ *How to simplify ratios*...
Curated Video
Ratios: The Maths of Baking
How would you bake the world's biggest cake? The same way as a small one... in ratio, but with increased measures. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show...
Curated Video
The History of the Golden Ratio
How the Golden Ratio was discovered and used through time, from architecture to art to music. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts...
Curated Video
Measuring Music
We use a sounding board called a sonometer to investigate how the pitch of sound changes when the length of wire being plucked changes. We change the position of a moveable bridge to change the length of the wire and discover that...
Curated Video
Distance to the Sun and Moon
What are the trigonometric functions and how did the sine function allow Indian astronomers to prove that the Sun was 400 times farther from Earth than the Moon? Maths - Shape A Twig Math Film. Reinforce and extend the learning required...
Curated Video
Proportion: The Meaning of Proportion
By the end of this learning object the student will be able to: Write the Equivalent Ratios4415
Curated Video
Ratio: Definition of the Ratio
By the end of this learning object, the student will able to: Define the ratio.4414
Curated Video
Ratio: Meaning of the Ratio
By the end of this learning object, the student will able to: Define the ratios.4413
Curated Video
The Main Trigonometrical Ratios of the Acute Angle: Using Trigonometric Ratios
By the end of this learning object, the student will be able to: Define the trigonometrical ratio for different angles. Use the trigonometric Ratios.