Professor Dave Explains
Converting Between Fractions, Decimals, and Percentages
Converting between different ways of expressing a value.
Cerebellum
Decimals
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'.
Curated Video
Finding the Amount of Change and Final Amount
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...
Curated Video
Defining Percentages Using Ratios
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...
Curated Video
Understanding Compound Interest
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...
Curated Video
Representing Fractions as Percents: Renaming with 100 in the Denominator
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...
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
Identifying Equivalent Representations of Rational Numbers
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,...
Curated Video
Solving Ratio and Percent Problems using Proportions
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...
Curated Video
Find the Part When the Percent and Total Are Known
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...
Curated Video
Calculating the Total with Percent and Part using a Double Number Line
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...
Curated Video
Decoding Percent Problems in Real World Scenarios
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...
Curated Video
Solving Percent Problems using Proportions
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...
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
Converting Decimals to Percents and Vice Versa
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...
Curated Video
Converting Percents to Fractions
In this video, the teacher explains how to convert percents to fractions by using the concept that a percent represents a whole divided into 100 equal parts. They provide examples and strategies for simplifying fractions, making it...
Curated Video
Converting Fractions to Percents: Using the Identity Principle of Multiplication
In this lesson, students will learn how to convert fractions to percents by multiplying them by 100%. The teacher explains the concept by demonstrating the steps and providing examples. Students are encouraged to simplify the fractions...
Visual Learning Systems
The Atmosphere: the Atmosphere
Students will learn about the different layers of the atmosphere. The changes in the atmosphere are explained using examples of contemporary environmental conditions brought about by human behavior. The oxygen cycle and the carbon cycle...
Why U
Algebra 29 - Understanding Percentages
Percentages are one method of describing a fraction of a quantity. The percent is the numerator of a fraction whose denominator is understood to be one-hundred.
Curated Video
Calculating Percent of Increase and Decrease Using Proportions
This video provides examples and step-by-step instructions on how to determine the percentage of change by comparing the original amount to the new amount. It also emphasizes the importance of using the correct starting or original...
Curated Video
15 new E. coli cases linked to McDonald's Quarter Pounders, total now at 90
15 new E. coli cases linked to McDonald's Quarter Pounders have been reported, bringing the total to 90. (Scripps News)
Curated Video
Annual inflation rate falls below 3% for the first time since 2021 as Fed eyes potential rate cut
A Labor Department report released Wednesday showed that year-over-year inflation fell to 2.9% last month. (Scripps News)
Bloomberg
Fed's Preferred Measure of Underlying Inflation Jumps
The core personal consumption expenditures price index, which strips out the volatile food and energy components, rose 0.3% in September, according to the Bureau of Economic Analysis report. Inflation-adjusted consumer spending jumped...
Bloomberg
Mark Carney: The Likelihood of Recession Has Gone Down
Brookfield Asset Management Chair Mark Carney says the likelihood of a recession has gone down. He speaks on "The David Rubenstein Show: Peer-to-Peer Conversations." This interview was recorded October 2 in New York.