Amor Sciendi
Architecture and Proportion
The French Architect Le Corbusier revived traditions of human proportions in architecture in a radically new way.
Curated Video
Solving Multistep Ratio and Percent Problems Using Proportions
In this video, the teacher explains how to solve multistep ratio and percent problems using proportions. They use examples of applying coupons and taxes to demonstrate the concept. The teacher also clarifies the misconception that the...
Curated Video
Calculating Perimeter from Scale Drawings using Ratios and Proportions
This video teaches students how to compute the actual perimeter of a scale drawing by using ratios and proportions. It explains the concept of proportions and demonstrates how to find missing side lengths in similar figures. The video...
Getty Images
INTERVIEW: Robert Epstein and Jeffrey Friedman on their first reaction of
reading it, on the shocking parts, on how relevant it is today, on being astounded at it's epic proportions, on wanting to present it to a younger generation, on the queer manifesto of it. at the Howl Interviews: 60th Berlin Film...
AFP News Agency
CLEAN : Tokyo dreams fuel Cambodias first disabled basketballers
CLEAN : Tokyo dreams fuel Cambodias first disabled basketballers
AFP News Agency
CLEAN: Tourists in Mexico worry as swine flu spreads
CLEAN: Tourists in Mexico worry as swine flu spreads
AFP News Agency
CLEAN : French pro streamer Gotaga talks gaming with AFP
From lunch vouchers to three million dollar cash prizes French gamer and streamer Gotaga talks about how far gaming has come and how he sees the life of a pro streamer (Footage by AFPTV via Getty Images)
Curated Video
Carolina Herrera debuts Fall 2014 Collection at New York Fashion Week
Carolina Herrera says inspiration is everywhere - and that's possibly how she's been at the top of her game for nearly 30 years.
The Venezuelan-American fashion designer debuted her Fall 2014 Collection Monday (10 FEB. 2014) during New...
AFP News Agency
CLEAN: AIDS still an acute epidemic in America's capital
CLEAN: AIDS still an acute epidemic in America's capital
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...
Physics Girl
Calculating Pi with Darts
Can pi be calculated through a game of darts? The video shows why this works mathematically and the issues surrounding the methodology. Once participants overcome errors, success through physics and mathematics leads to celebration.
Khan Academy
Similar Triangles, Similarity, Geometry
Although a rather complicated topic, this video clearly explains the concept of solving problems involving similar triangles. It employs problem-solving to determine whether two figures are similar triangles. In addition, it provides...
Khan Academy
Similar Triangles (Part 2), Similarity, Geometry
Building on concepts in the first part of the series on similar triangles, installment number two explores how to find the values for given angles in a triangle. These problems are solved by using algebra and ratios. A step-by-step...
Khan Academy
SAT Prep: Test 1 Section 6 Part 2
Using the process of elimination, Sal takes students through helpful ways to solve multiple choice questions on the SAT quickly and correctly. Problems 5-6 involve probability and proportions.
Khan Academy
SAT Prep: Test 4 Section 2 Part 6
If students require deeper explanations on algebra problems, this video (which ends this practice SAT session) would be beneficial. Sal goes into detail about his methodology and thought process behind some of the more difficult problems...
Khan Academy
Solving a Proportion with an Unknown Variable (Example)
There are many ways to solve a proportion. In this presentation, Sal goes over all of them. He demonstrates several methods for solving a proportion. He goes through every necessary step and explains the entire process. This would be...
Khan Academy
Unit Conversion: Gallons to Quarts, Pints, and Cups, Pre-Algebra
Provide your students with the context and information they'll need to convert gallons to quarts, pints, and cups. In this video, Sal defines gallons, quarts, pints, and cups. Then he uses this information to solve a problem where he...
Khan Academy
Proportion Word Problem (Example 1)
This video elaborates on the basic concept of finding an unknown by analyzing a word problem and then applying one of the techniques seen in the previous video. Tip: Use this word problem as a warm-up before your math lesson.
Flipped Math
Side Splitter Theorem
Apply perspective to similarity. Individuals learn about the Side Splitter Theorem by looking at perspective drawings. Pupils use the theorem and its corollary to find missing lengths in figures. Next, they practice using the theorem and...
Flipped Math
Calculus AB/BC - Modeling Situations with Differential Equations
Differentiate between models. Pupils watch as the video works through three examples of creating a differential equation to model a situation. Scholars use their knowledge of proportional relationships to set up the equations and to...
Mathispower4u
Hooke's Law - Direction Variation Application
Get a direct stretch from a spring. The presentation shows how Hooke's law uses direct variation. Scholars see how to calculate the spring constant for a spring given a stretch distance and a force. Individuals then use the spring...
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
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
Math with Jake: Transposition Using Ratios
The star of the show is ratios. The informative resource explains how to transpose music using ratios. Individuals transpose the song "Twinkle, Twinkle" in the activity by applying their ratio skills. The activity challenges class...