Percentages and Percentage Change

In this lesson, students will review the two methods of using ratio tables - addition and multiplication - and understand the concept of percents as a part-to-total ratio. Through a real-life example of comparing Susan's quiz scores,...

Upon viewing the Investigating Earth's Natural Resources video series, students will be able to do the following: Define a natural resource as anything we take from the environment and use. List natural resources commonly used...

Explanation of Buying Power Index

In this video, the teacher explains how to determine the age of objects using exponential decay. They use the example of carbon-14 dating to demonstrate the concept, showing how the percentage of carbon-14 decreases over time. The video...

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.

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...

Through a real-life example of a pair of sneakers on sale, this video demonstrates step-by-step how to find the scale factor, calculate the discount, and determine the final cost. The video emphasizes the importance of understanding the...

In This Episode, Tyler Teaches Us About Going from a Percent to a Decimal

Converting between different ways of expressing a value.

This video covers exam strategy, using a calculator, arithmetic and decimals. This is part 2 from the series 'Introduction to the Math Section of the SAT'.

In this video, the teacher explains how to find the amount of change and the final amount given the original amount and the percent of change using diagrams, proportions, and equations. They emphasize that the percent of increase or...

In this video lesson, students will learn how to define percents by using ratios. The teacher explains the concept of ratios and demonstrates different ways to write them. The teacher also clarifies the difference between a percent and a...

In this video, students learn about compound interest and how it can help them make money without doing anything. The lesson explains the difference between simple and compound interest, and provides a step-by-step guide on how to...

In this video, the teacher explains how to represent common fractions as percents by renaming them as equivalent fractions with 100 in the denominator. The teacher uses mental math and a money analogy to help students understand the...

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...

In this video lesson, students will learn how to identify equivalent representations of rational numbers by converting fractions to decimals or percents. The teacher explains the concept using number lines divided into equal parts,...

This video explains how to solve ratio and percent problems using proportions. It provides examples and demonstrates how to set up known ratios and use the multiplicative relationship within a proportion to find the unknown values. The...

In this video, the teacher explains how to calculate the total number of cars in a parking lot when given the percentage of blue cars and the number of blue cars. The teacher introduces the concept of percents as ratios and discusses...

In this lesson, students will learn how to calculate the part of a whole when given a percentage and the total. By using a double number line, students can visually represent the ratio and solve the problem. This lesson emphasizes...

In this video, the teacher explains the difference between percent change and amount of change. They use real-world scenarios to help students understand and decode percent problems. The teacher emphasizes the importance of identifying...

This video teaches students how to solve problems involving finding a percent of a number using a proportion model. It explains the concept of a proportion and how to find the scale factor. The video also provides an example problem...

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...

In this video lesson, students will learn how to convert decimals to percents and vice versa by using their understanding of decimal naming. The teacher explains the process step by step, demonstrating how to convert decimals to...