Curated Video
Finding Percent of Change and Final Amount Percentage
In this video, the teacher explains how to find the percent of change and determine the percent the final amount is of the original amount. They demonstrate three different approaches: using diagrams, proportions, and equations.
Curated Video
Writing a Ratio as a Percent
"Writing a Ratio as a Percent" uses multiplication to show the percent of a ratio as a rate per 100.
Curated Video
Percent and Ratio
"Percent and Ratio" models how to write a given percent as a rate over 100, then reduce it to find the ratio.
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Compound Growth and Decay - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Compound Interest - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Compound Interest - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Compound Interest - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Percentages - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
Calculating Percent of a Number Using Proportion Model
In this video, a teacher explains the concept of proportions and how they can be used to find the part of a total. The example of a survey is used to demonstrate how to calculate the number of people who prefer a specific flavor of ice...
Curated Video
Computing Successive Percentages: Proportions and Equations
In this video, we look at an example of calculating the final price of a computer that was on sale for 30% off, with an additional 15% discount from a coupon and a 7.25% tax rate. The teacher emphasizes the importance of understanding...
Curated Video
Application of Percentage
It explains percentage as parts per hundred. It also explains how to convert ratios to percentages and how to calculate the increase or decrease in a value as percentage.
Curated OER
How Do You Find Equivalent Ratios?
Ratios are a comparison of numbers. So given a ratio, how can an equivalent ratio be written? Just multiply or divide, both the numerator and the denominator, by the same value. The result will be different numbers, but equal values that...
Curated OER
Another Percent Word Problem
Guavas are on sale in this video. Here two examples are shown to calculate a discounted rate.
National Education Association
Rates and Proportions
Clarify complex math concepts with a helpful video. Learners view ways to work with ratios and proportions while discussing vocabulary and notation. After solving proportions, they apply the new strategy to word problems.
Curated OER
Basic Rate Problem
A simple rate problem is looked at in this video. The listener needs to compute whether four trains each going different distances over different amounts of time are moving at the same constant rate. This problem reinforces ones basic...
PBS
Real World Ratio and Rate Problem: Bianca’s Fifty Percent Solution
Fifty percent off can still be quite expensive. Future consumers watch a video showing an irresponsible young shopper overspending in a 50 percent off sale. They then use store ads to calculate 10, 25, 50, and 75 percent discounts on items.
Education Development Center
What's Cooking? Carbohydrates
Chef Jamika is at it again, highlighting math and science in her cooking demonstrations. In this episode, ratios and fractions are introduced within the main topic of carbohydrates and the direction for making succotash! The general...
PBS
Soul Food Junkies: Portions
Serve up a rate of percents. The Math at the Core resource investigates the percent of daily value of sodium and saturated fats in different foods. Pupils determine the number of serving sizes they eat of popular snack foods and...
PBS
Real-Life Math | Physical Trainer
Train yourself to naturally use math. Young mathematicians first watch a video in which a personal trainer describes math concepts necessary in his daily professional life. After measuring their heart rates, they apply percentages to...
California Academy of Science
Coral Reefs and Climate Change
Coral reefs cover less than one percent of the ocean floor, yet more than 25 percent of marine life lives in coral reefs. A colorful, engaging video describes the health of coral reefs and why the formations matter. The first lesson in a...