Catalyst University
Geometry | Volume of a Sphere & Hemisphere
In this video, we calculate the volume of a sphere and hemisphere [with examples].
Curated Video
Rounding Decimal Numbers to the Nearest Hundredths Place Using a Number Line
In this video, students learn how to round decimal numbers to the nearest hundreds place using a number line. The instructor demonstrates the process by rounding two given decimal numbers and explains the steps involved.
KnowMo
Expressing Quantities as a Percentage
This is a lecture video that explains how to express quantities as a percentage. The speaker explains the concept of percentages and how they are closely linked to fractions and decimals. They demonstrate different methods to convert a...
Curated Video
Compare Decimals
In this short math video we will answer a standardized math test question where we are asked to compare decimals. This is a multiple select question where we need to identify the three correct answers. We will review decimals written to...
Curated Video
Multiplying Rational Numbers
In this video lesson we will learn that the rules for multiplying rational numbers are the same rules we learned and used to multiply integers. We will review these rules and work through examples with fractions and decimals. We will...
Brian McLogan
Graphing an ellipse and identify the major parts
Learn how to graph horizontal ellipse not centered at the origin. A horizontal ellipse is an ellipse which major axis is horizontal. To graph a horizontal ellipse, we first identify some of the properties of the ellipse including the...
Curated Video
Comparing Irrational and Rational Numbers
In this video, we demonstrate the process of lining up decimals and comparing digits to determine which number is greater. We discuss the concept of irrational numbers continuing on forever without repeating and the use of symbols to...
Curated Video
Using Orders of Magnitude in Physics Calculations
The video is a lecture presentation on the use of orders of magnitude in physics. It defines orders of magnitude as comparing numbers or values in terms of powers of 10 and explains how to use decimal prefixes for expressing very small...
KnowMo
Expressing Quantities as Fractions: Tips and Examples
The video provides a tutorial on expressing one quantity as a fraction of another. The presenter explains how to decide which number is the numerator and denominator, and how to simplify fractions. The video covers examples where...
Curated Video
Sharing Cereals (Use the four operations to solve word problems involving measurements expressed as fractions and decimals)
A box has eight tenths kilogram of cereal. If 3 people wanted to have one fourth kilogram of cereal each, will there be enough cereal in the box to serve all of them?
Brian McLogan
How to write a fraction as a decimal and as a percent
👉 Learn how to convert between decimals, fractions, and percentages. Numbers can be converted between decimals, fractions, and percents. To convert a number written in decimals to fractions, we write the number without the decimal point...
Brian McLogan
Solving two step equations with a decimal
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse...
Schooling Online
IB Physics Measurement and uncertainties: Significant Figures
Using significant figures is as easy as watching Netflix! This lesson will bring back the basics: counting and rounding significant figures. To finish, we’ll explore how significant figures are related to accuracy and how to approach...
Brian McLogan
Using Compound and Simple Interest to find Final value
Learn about compound interest. We will look at how to determine the final value, initial value, interest rate and years needed. We will investigate problems compounded continuously, daily, weekly, monthly, quarterly and yearly. These...
Curated Video
Understanding Place Value and Decimal Notation
In this video, the concept of place value and the relationship between digits in a number are explained using base 10 blocks. The video also addresses the misconception that having the same digit in a certain place means having the same...
KnowMo
Area of Circles: Formula and Calculations
This video is a tutorial on how to calculate the area of circles using the formula πR². The presenter explains the concept of area and how it is dependent on the radius of a circle. The formula is derived through a breakdown of a circle...
Curated Video
Understanding Discount
In this short video we will answer a standardized math test question where we are asked to identify an algebraic expression that represents the final cost of an item after a discount. We will understand that discount means we pay less....
Curated Video
Converting Repeating Decimals into Fractions
Convert repeating decimals into fractions.
Curated Video
Java 11 Programming for Beginners 2.5: Exploring Strings
The video gives a basic intro to string and how it is frequently used. • Tutorial on string and how we format it • Example of how we use string interpolation/ formatting to tidy up the output
KnowMo
How to Calculate Simple Interest in Financial Mathematics
The video is a lecture on simple interest in financial mathematics. The presenter explains the concept of simple interest and how it is used to calculate interest for a period of time at a particular rate of interest. The formula for...
Brian McLogan
What is the percent between two numbers using a proportion
👉 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,...
Brian McLogan
How to add two decimals together
👉 You will learn how to add and subtract numbers in decimal form. When adding and subtracting decimals it is very important to align the decimal points and use zero as space holders. Then you will apply the operations just like we do in...
KnowMo
Approximation and Error Intervals/Bounds
This video is a tutorial on approximation and error intervals, also known as bounds. The presenter explains how approximation is used as an estimation of the rough value of a calculation by rounding off numbers to significant figures....
Curated Video
Dividing Decimals by Whole Numbers Using Visual Models
Divide decimals by whole numbers using a 10x10 array.