Curated Video
Ratios and Proportions - Math Coach Corner - Test Your Knowledge!
In this video, we’re diving into **ratios and proportions* with four thought-provoking questions. 🔢 *Here’s what we’ll cover:* ✅ Finding the value of a ratio: Is 1/10 the correct value for 1/2:1/5? ✅ Checking for proportional...
Curated Video
Writing and Solving Proportions
In this video, Mrs. C breaks down what a proportion is and shows you three easy methods to solve for a missing value: ✅ Mental Math – Spot patterns to find the missing number quickly. ✅ Multiplication – Solve when the variable is in the...
Curated Video
Identifying Proportional Relationships
In this video, I’ll show you *two easy methods* to determine whether two ratios (or even a whole table of values) are proportional: ✅ *Simplifying Ratios* – Reduce each ratio and compare! ✅ *Cross Products Property* – Multiply across and...
Curated Video
Similar Figures, Angle-Angle Similarity and Indirect Measurement
In this video lesson, we explore similar figures and indirect measurement in math. We learn about corresponding sides and angles, how to use similarity to solve problems, and even how to find the height of an object using indirect...
Virtually Passed
Sum of Moments equals I alpha proof
Here I prove the result that the sum of moments about the center of mass = I_G alpha and the sum of moments about a fixed point = I_o alpha.
Virtually Passed
Relative motion (with rotating axes) Summary
The equations for NON rotating reference axes are: Va = Vb + Va/b and a_a = a_b + a_a/b But these equations are only true if the relative axes are not rotating. If the relative frame of reference xy is rotating (eg think of a policeman...
Brian McLogan
Solving a proportion using cross multiplication
👉 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...
Brian McLogan
Solving a proportion for a variable
👉 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...
Brian McLogan
How to apply cross multiplication to solve a proportion
👉 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...
Brian McLogan
Solving a proportion using two step method
👉 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...
Curated Video
Real World Ratio Problem Using Scale
In this short video we will answer a standardized math test question where we are asked to solve a real world ratio problem using scale. We will identify the scale is a ratio. We will use the given scale to write a proportion to convert...
Brian McLogan
How to cross multiply to solve a proportion
👉 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...
Curated Video
Using Percent to Compare Data
In this short video we will answer a standardized math test question where we are asked to compare data by finding and using a percent. We will first review the table of data to understand the data given. We will then use a part to whole...
Brian McLogan
How to apply the triangle proportionality theorem to determine the missing side
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Brian McLogan
Learning to solve a proportion with a binomial
👉 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...
Curated Video
Using Data to Make an Inference
In this short video we will answer a standardized math test question where we are as to make an inference based on a sampling of collected data from a survey. We will use what we know about proportionality to predict what a larger...
Brian McLogan
Solving a proportion with x on both sides
👉 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...
Curated Video
Solving Multi-Step Problems with Proportions and Equations
In this video, the teacher explains how to find the percent of a quantity using proportions and equations. They provide examples and step-by-step explanations to help students understand and solve multistep percent problems.
Curated Video
Similar Figures, Angle-Angle Similarity and Indirect Measurement
In this video lesson, we learn about similar figures and indirect measurement. The teacher explains how to identify similar figures, find missing side lengths using proportional ratios, and use angle-angle similarity to solve problems....
Curated Video
Proportional Relationships in a Table (Part 1)
Determine if ratios in a table are proportional by testing for equivalent ratios.
Curated Video
Proportional Relationships in a Table (Part 2)
Determine if ratios in a table are proportional by testing for equivalent ratios.
Curated Video
Finding Missing Measures in Similar Figures
In this lesson, students will learn how to find missing measures in similar figures by solving algebraic equations. They will review rigid transformations and understand how to determine if polygons are similar.
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
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...