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
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.
Curated Video
Discount: A Percent of Decrease
In this math video we will find discount as a percent of decrease. We will understand discount as a markdown in price. We will find the percent of a number and decrease (or subtract) it from the original price. We will then apply a...
Curated Video
Using Conversion Ratios
In this math video we will be using conversion ratios to change a recipe. We will be converting cups to fluid ounces and fluid ounces to tablespoons. We will answer a three part real world problem using conversion ratios to support our...
Curated Video
Simplifying Ratios to Find Equivalents - Real World Scenario
This video teaches students to simplify ratios to find equivalent ratios. It includes a real-world scenario featuring a recipe that needs to be modified. The video covers finding ratios, simplifying ratios and equivalent ratios.
Curated Video
Introduction to Ratios - Real World Scenario
This video introduces the concept of ratios, and gives two real-world examples for using them. The video covers writing ratios as fractions and simplifying ratios.
Curated Video
GCSE Maths - What are Ratios & How to Simplify Them (Part 1) #81
This video covers: - How ratios work and how to find ratios - How to simplify ratios This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher - All on your...
Curated Video
GCSE Maths - Simplifying Harder Ratios (Decimals, Mixed Units and 1:n) - Part 2 #82
This video covers: - How to simplify more complicated ratios including: - Ratios with decimals in e.g. 1.5 : 4.5 - Ratios with mixed units e.g. 1.6cm : 12mm - Simplifying to the form 1:n e.g. simplify 3 : 20 to the from 1 : n. This video...
Curated Video
GCSE Maths - Proportional division #86
This video covers: - How to divide an amount between multiple individuals using proportion division This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on your course GCSE Higher -...
Curated Video
Converting Measurements: Inches & Centimeters | 6.RP.A.3
In this math video we will be converting measurements: inches to feet and inches to centimeters. We will solve this two part question using conversion ratios to write equivalent ratios, also known as a proportion. We will review how to...
Curated Video
Reasoning with Ratios for a Recipe | 6.RP.A.3
In this math video we will be reasoning with ratios for a recipe. We will be provided with 3 ingredients to a cookie recipe and we will be asked to identify ratios of ingredients where we either double, triple, or possibly halve the...
Curated Video
How to Use a RATIO | 6.RP.A.3
In this math video we will learn how to use a ratio. We will be given a ratio of mass to volume. We will review how to write a ratio and how to write a proportion using equivalent ratios. We will use the given information and identify...