Instructional Video16:25
Curated Video

Understanding Parallel Lines and Transversals: Identifying Angles and Patterns

9th - 12th
In this lesson on parallel lines and transversals, students will learn to identify the angles formed by these lines and find their measurements. They will also become familiar with key vocabulary terms such as perpendicular lines,...
Instructional Video4:27
Curated Video

Understanding Place Value

9th - 12th
This video teaches how to solve a standardized math test question that requires knowledge of place value. The instructor explains how to identify the digit that is 1/10 of the value of the 9 in a given number and provides a step-by-step...
Instructional Video3:53
Curated Video

Add and Subtract Mixed Numbers Using a Line Plot

9th - 12th
In this short math video we will answer a standardized math test question where we are asked to add and subtract mixed numbers using a line plot. We will review how to read and interpret a real world line plot. Using the answer choices...
Instructional Video14:34
Curated Video

Solve a System of Linear Equations Using Substitution

9th - 12th
In this video lesson, the teacher explains how to solve a system of linear equations using substitution in five simple steps. The lesson includes examples, tips on how to check your solution, and challenges for the viewer to solve on...
Instructional Video13:57
Curated Video

Introduction to Solving a System of Linear Equations Using Elimination

9th - 12th
In this video lesson you will be introduced to the method Elimination which can be used to solve a system of linear equations. We will first review the definition of like terms, coefficient, and opposites. We will use these terms to...
Instructional Video10:01
Curated Video

Triangle Similarity and Indirect Measurement

9th - 12th
In this video lesson on triangle similarity and indirect measurement, students will learn how to find missing side lengths and use angle angle similarity to solve problems. Through real-world examples and step-by-step explanations,...
Instructional Video18:36
Curated Video

Dilations: A Mathematical Change in Size

9th - 12th
This video lesson introduces dilations. Dilations are a transformation that changes the size of a figure by enlarging it by a scale factor greater than one or by reducing it by a scale factor less than one. Real world examples are...
Instructional Video10:15
Curated Video

Rotations in the Coordinate Plane

9th - 12th
In this video lesson we will learn how to rotate figures in the coordinate plane about the origin. We will understand that all rotations result an image that is congruent to the original figure. The origin will be the center of rotation....
Instructional Video12:33
Curated Video

Standard Form: How to Rewrite a Linear Equation

9th - 12th
In this video lesson we will learn about the Standard Form of a linear equation. We will learn that A, B, and C must be integer values and A must be positive. We will learn how to rewrite an equation in slope-intercept from into Standard...
Instructional Video1:47
Curated Video

Using the Pythagorean Theorem with a Rectangle

9th - 12th
In this short math video we will answer a standardized math test question where we are asked to find the length of the diagonal of a rectangle. We will review that the four angles of any rectangle are 90 degrees. So, the diagonal forms a...
Instructional Video2:05
Curated Video

Understanding "Faster" in Math

9th - 12th
In this short video lesson we will answer a standardized math test question where we are asked to find the speed someone finished a race faster than someone else. We will review that faster equates to less time in math and we need to...
Instructional Video15:25
Curated Video

Understanding Rotations: Identifying and Rotating Figures in the Coordinate Plane

9th - 12th
In this lesson on rotations, students will learn how to identify rotations and rotate figures in the coordinate plane. They will understand the vocabulary of transformations and how to tell when a transformation is a rotation. The lesson...
Instructional Video12:07
Curated Video

Using Properties to Solve Equations

9th - 12th
In this video, the teacher explains how to use properties of equality to solve linear equations in one variable. The viewer will learn how to justify each step using the properties of equality and how to check their solutions. The lesson...
Instructional Video13:26
Curated Video

Writing Equations of Parallel and Perpendicular Lines

9th - 12th
In this video lesson we will learn how to identify if two lines are parallel and if two lines are perpendicular to each other. We will discover that parallel lines have the same slope. We will learn that perpendicular lines have slopes...
Instructional Video12:44
Curated Video

Graphing Linear Functions in Standard Form

9th - 12th
In this video, the teacher explains how to graph linear functions in standard form and how to find x and y-intercepts. The lesson includes a review of horizontal and vertical lines and a real-world problem to apply the concepts.
Instructional Video17:30
Curated Video

Writing and Graphing Equations of Proportional Relationships

9th - 12th
In this lesson, students will learn how to write and graph equations of proportional relationships in the form of direct variations. They will also identify the constant proportionality from an equation and learn how to use it to graph...
Instructional Video11:36
Curated Video

How to Use and Prove the Pythagorean Theorem

9th - 12th
This video teaches the Pythagorean theorem, explaining its proof and how to use it to find missing side lengths of a right triangle. The lesson includes key vocabulary and examples with step-by-step instructions, making it easy to...
Instructional Video1:34
Curated Video

Real World Ratio Problem Using Scale

9th - 12th
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...
Instructional Video10:20
Curated Video

Stretch and Shrink Linear Functions

9th - 12th
In this video lesson we will learn how to describe horizontal stretches and shrinks, as well as, vertical stretches and shrinks. We will learn that horizontal stretches and shrinks multiply each input by a factor and the function and its...
Instructional Video18:01
Curated Video

How to Reflect Linear Functions

9th - 12th
In this video lesson we will learn how to reflect a linear function. We will also learn how to identify a reflection using a graph and how to represent a linear reflection using function notation. We will discover that a linear function...
Instructional Video16:46
Curated Video

How to Write Terminating and Repeating Decimals as Fractions

9th - 12th
In this video lesson we will learn how to write terminating and repeating decimals as fractions. We will discover that a terminating decimal is a number the "ends". We will write the terminating decimal as a fraction while reviewing...
Instructional Video3:32
Curated Video

Gravity Falls Character Transformation Project

9th - 12th
In this video you will see four student character transformation projects. They began by dilating an image in a Google doc. They used the draw feature to engineer half inch square graph paper on an 8.5 by 11 in document. Students then...
Instructional Video20:28
Curated Video

Grade 8 Common Core Math YEAR END REVIEW Part A

9th - 12th
This video lesson provides guided practice to prepare for a Grade 8 Common Core Mathematics cumulative assessment. The questions that are presented and modeled are the released 2018 MCAS Session A questions. A calculator is not permitted...
Instructional Video2:14
Curated Video

Finding Distance with Pythagorean Theorem

9th - 12th
In this video, the teacher explains how to use the Pythagorean theorem to find the distance between two cities on a coordinate plane, using a standardized test question as an example. The teacher walks through the steps of identifying...