Ratio Relationships: Quantities" uses ratio language to describe a ratio relationship between given quantities.

In this math video we will discuss ratios 3 ways & simplified. We will be presented with a real world situation and asked to represent the ratio of part to part and part to whole. We will need to simplify the ratios to identify the...

Gears explained. Learn what are gears, driver gear and driven gear, gear ratios, why we need gears, torque and mechanical advantage in this video on mechanical engineering.

Gear train design, how to design and calculate gear trains velocity, ratio, direction and torque.

"Writing a Ratio as a Percent" uses multiplication to show the percent of a ratio as a rate per 100.

"Proportion Problems" shows how to solve for the unknown value in proportions by comparing their equivalent values on number line diagrams.

Solve Unit Rate Problems solves unit rate problems that involve unit pricing by identifying the number of units and price of one.

Writing Ratios: m and ft. converts between meters and feet to solve four given word problems by writing ratios.

Writing Ratios: cm and in. converts between centimeters and inches to solve given word problems by writing ratios.

Order for Rational Numbers writes, interprets, and explains statements of order for rational numbers in real-world contexts.

Early atomic physics - the development of the first ideas. The first ideas started with Democritus: atom is unsplittable. Then John Dalton Law of constant proportions. Avogadro: Molecular theory of gas laws. Prout's hydrogen weight...

Maybe a particular stock has caught your eye... but how can you tell if it's a good buy?

What is Anti-Dilution Protection? Anti-dilution protection is a contractual right that prevents your ownership percentage in a company from decreasing when new shares are issued.

What are Voting Rights of Preferred Shares? Preferred typically have no voting rights, whereas common stockholders do. Preferred stockholders may have the option to convert shares to common shares but not vice versa. Preferred shares may...

In this video, the teacher explains how to find the area of a shaded part in a square using fractions. The square is divided into equal parts, and the teacher guides viewers through identifying the shaded part and the whole square....

Pi (π) is a fascinating number with many applications in mathematics, physics, and engineering. Its infinite decimal representation is a reminder of its fundamental nature in the universe. Mathematician Johann Lambert proved that pi is...

“Ratios and Unit Rates” will help you understand the difference between a ratio and a unit rate.

Princeton University physicist Paul Steinhardt reveals how irrational ratios of two repeating patterns produces intriguing and unexpected effects.

Nobel Laureate in Physics Anthony Leggett (Illinois) describes the so-called Anthropic Principle that some invoke to answer the "fine tuning problem" of cosmology.

Students learn to solve ratio problems using similar figures and scales

The Most Unusual Ways Pi Shows Up In Mathematics | Can You Explain These?

Solve for Missing Values in Ratio Problems Using Multiplicative Reasoning solves for the missing values in ratio problems by using multiplicative reasoning.

In this video, the teacher explains how to find the unit rate cost per ounce of buying a watermelon using conversion ratios. The video walks through the steps of converting from pounds to ounces and shows how to avoid common mistakes...

This is a video tutorial on how to solve a cooking problem involving fractional ratios. The teacher uses a tape diagram to explain how to find the amount of blueberries and strawberries needed for the whole recipe based on the given...