KnowMo
Introduction to Ratio
This video provides an introduction to ratios and explains what they are and how to write and simplify them. The presenter uses real-world examples to illustrate how ratios are used in everyday life, such as in baking and mixing cement....
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Direct and Inverse Proportion - 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 - Geometry & Measures: Angles in Polygons - 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
Find Sine Value Using Side Ratios
In this video, students learn how to find the sine value of an acute angle in a right triangle. It explains the properties of right triangles, such as the relationship between the hypotenuse and the legs, as well as the concept of...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Ratio - 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
Using the Percent Equation to Find Parts, Wholes, and Percents
In this lesson, students will learn how to use the percent equation to find parts, holes, and percents. The teacher explains how to derive the equation and convert percent to decimal for algebraic use. The lesson includes examples and...
Curated Video
Statistics for Data Science and Business Analysis - Levels of Measurement
In this video, the other classification of variables is shown - levels of measurement. This clip is from the chapter "Descriptive Statistics Fundamentals" of the series "Statistics for Data Science and Business Analysis".This section...
Curated Video
KS2 Primary Maths Age 9-13 - Ratio: - Explained
SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps. This video looks at...
Brian McLogan
What is the similarity of triangles for SSS
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Professor Dave Explains
Nuclear Reactions, Radioactivity, Fission and Fusion
Radioactivity. We've seen it in movies, it's responsible for the Ninja Turtles. It's responsible for Godzilla. But what is it? It's time to learn exactly what nuclear reactions are, and what it is that makes atomic bombs so destructive,...
Curated Video
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Percentage Problems - Explained
SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps. This video looks at...
Brian McLogan
Using proportions to solve a word problem with currency
👉 In this video, you will learn how to solve a word problem using proportions. To do this we will identify our unknowns as well as our ratio of terms. We will then proceed to set up a proportion and solve it.
Professor Dave Explains
What are the Types of Numbers? Real vs. Imaginary, Rational vs. Irrational
An overview of the types of numbers.
Curated Video
Calculating Actual Lengths from Scale Drawings Using Ratios and Proportions
In this video, the teacher explains how to calculate the measurements for a scale model of the Parthenon using ratios and proportions. The lesson covers the concepts of ratios, proportions, corresponding sides in similar triangles, and...
Professor Dave Explains
Acid-Base Equilibria and Buffer Solutions
Remember those pesky iceboxes? Weak acids and bases establish equilibria, so we have to do iceboxes to figure out things about them. But don't worry, buffers are neat.
Brian McLogan
Percent of change
👉 Learn how to solve problems using percents. When solving problems with percents we will either convert the percents to decimal form or use proportions to solve. We will look to solve for the percent of change, the original price,...
Curated Video
Proving the Volume Formulas for Pyramids and Cones Using the Cavalieri Principle
This video explains how to prove the relationship between the volumes of pyramids and prisms, as well as cylinders and cones, using the Cavalieri principle. The proof involves comparing the volumes of stacked rectangular prisms to the...
Curated Video
Converting Measurement Units Using Ratio Tables
In this lesson, students will understand the difference between US customary units and metric units, and how to convert between them. Through examples and practice problems, students will learn how to set up ratio tables and use...
Brian McLogan
Finding the rate of change from a graph
👉 Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph, a right triangle is drawn on the graph...
Brian McLogan
Learn how to rationalize the denominator with a radical in denominator
👉 Learn how to find the square root of rational numbers. To find the square root of a rational number, we first express the rational number as the square root of the numerator divided by the square root of the denominator and simplify....
Brian McLogan
Solving a Rational Equation
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...