Instructional Video3:39
Curated Video

Exploring Similarity in Circles: Translations and Dilations

K - 5th
In this video, the teacher explains how to determine if two circles are similar using translations and dilations. They define similarity as having congruent corresponding angles and proportional corresponding sides. The video provides...
Instructional Video5:06
Curated Video

Graphing Dilations Using Coordinates

K - 5th
In this video, the teacher explains how to dilate a triangle without using a graph. They review the concept of scale factor and show how it affects the dimensions of an image. By multiplying the coordinates of each point by the scale...
Instructional Video5:48
Brian McLogan

How to use dialations and factors to find the new perimeter and area of a rectangle

12th - Higher Ed
👉 Learn how to find the area and perimeter of a rectangle. A rectangle is a parallelogram with all the angles equal to 90 degrees. The area of a shape is the measure of the portion enclosed by the shape while the perimeter of a shape is...
Instructional Video4:33
Mazz Media

Integumentary System (Overview)

K - 8th
In this live-action program viewers will learn that the integumentary system is the body’s barrier between its interior and the outside. It is an organ system consisting of the skin, hair, nails, and exocrine glands. Students will come...
Instructional Video5:23
Curated Video

Determining Similarity of Figures Using Dilations and Scale Factors

K - 5th
This video explains how to determine if two figures are similar using dilations and scale factors. It reviews the concept of similar figures, which have the same shape but different sizes and corresponding congruent angles. The video...
Instructional Video4:18
Curated Video

Understanding Dilations: Enlarging and Reducing Parallelograms

K - 5th
In this video, students will learn about dilating a parallelogram by either enlarging or reducing its size. They will understand the concept of scale factor and how it affects the figure. The video explains how angles and parallelism...
Instructional Video3:45
Curated Video

Demonstrating Circle Similarity Using Translations and Dilations

K - 5th
In this video, we review the concept of similarity, where corresponding angles are congruent and corresponding sides are proportional. This lesson helps students understand the criteria for similarity and how it applies specifically to...
Instructional Video3:59
Curated Video

Understanding the Relationships between Similar Triangles through Translations and Dilations

K - 5th
This video explains the concept of similar triangles and their side and angle relationships. The video discusses how similar triangles have the same shape but not necessarily the same size, and how dilations and translations can be used...
Instructional Video2:52
NUMBEROCK

Transformations Song | Translations, Rotations, Reflections, & Dilations

K - 5th
This video will be the perfect way to introduce your class transformations. Students will learn that a flip is a reflection, a slide is a translation, and a turn is a rotation, while also reviewing the concepts of symmetry and dilations,...
Instructional Video5:50
Curated Video

Solve Word Problems by Doing Dilations

K - 5th
In this video, the teacher explains how to use a photographic enlarger to create a print from a negative while maintaining proper proportions. The lesson also covers solving word problems involving dilations using different scale factors.
Instructional Video6:03
Curated Video

Calculating the Scale Factor of a Dilation

K - 5th
This video explains how to determine the scale factor of a dilation by comparing the side lengths of the preimage and image. It demonstrates two methods: dividing the corresponding vertices and finding the ratio of the corresponding...
Instructional Video4:33
Mazz Media

Integumentary System

6th - 8th
In this live-action program viewers will learn that the integumentary system is the body's barrier between its interior and the outside. It is an organ system consisting of the skin, hair, nails, and exocrine glands. Students will come...
Instructional Video3:01
NUMBEROCK

Transformations Song | Translations, Rotations, Reflections, & Dilations

K - 5th
This video will be the perfect way to introduce your class transformations. Students will learn that a flip is a reflection, a slide is a translation, and a turn is a rotation, while also reviewing the concepts of symmetry and...
Instructional Video3:38
Curated Video

Determining Triangle Similarity through Rotation and Dilation

K - 5th
In this lesson, students will learn how to determine if two triangles are similar by checking for two corresponding congruent angles using a rotation and a dilation. They will understand that a dilation changes the size of an object...
Instructional Video1:42
Science360

Studying geometry in a pool hall

12th - Higher Ed
Math teacher Valerie Camille Jones gets students out of the classroom to see the real-world context of mathematics. Jones is a recipient of the 2013 Presidential Award for Excellence in Mathematics and Science Teaching.
Instructional Video3:16
Curated Video

Determining Triangle Similarity Using Dilation and Translation

K - 5th
In this lesson, students will learn how to determine if two triangles of different sizes are similar. By using a combination of dilation and translation, they will understand that when two triangles have corresponding congruent angles,...
Instructional Video2:22
PBS

Human Tree: Dilations

6th - 8th Standards
Look at dilations exponentially. Using a fractal from a museum exhibit, the installment from the Math at the Core: Ratios series introduces the term dilation. The presenter points out that dilations can make images either smaller or...
Activity2:06
PBS

Human Tree: Ratios

6th - 7th Standards
Create a personal tree. By visiting an exhibit at the National Museum of Mathematics, the resource introduces the idea of fractals. The exhibit takes an image of the person and creates a tree by repeating scaled images on the shoulders...
Instructional Video5:11
Corbett Maths

Enlargements with Negative Scale Factor

6th - 12th Standards
How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain...
Instructional Video5:34
Corbett Maths

Enlargements Using Ray Method

8th - 11th Standards
Figure out what to do when there is no grid to count. Using a ruler and a sharp pencil, the narrator shows how to perform a dilation when the figure is not on a grid. The ray method works by drawing a ray from the center of dilation...
Instructional Video3:31
Corbett Maths

Enlargements with Fractional Scale Factors

6th - 12th Standards
Enlargements make it bigger, right? A video shows viewers how to perform a basic dilation with a fractional scale factor. They learn how to use the scale factor to find the location of the transformed vertex by multiplying the horizontal...
Instructional Video4:55
Corbett Maths

Finding the Centre of Enlargement

6th - 12th Standards
Where did the transformation begin? Using a ruler, the narrator of a short presentation shows how to find the center of enlargement for transformed figures. Worksheets provide the class members an opportunity to practice the newly...
Instructional Video6:31
Corbett Maths

Describing Enlargements

6th - 12th Standards
What caused that to happen? Using three aspects, a video demonstrates how to describe an enlargement or dilation. The presenter counts the lengths of the sides to determine the scale factor and a ruler to find the center of dilation.
Instructional Video2:40
Corbett Maths

Enlargements

6th - 12th Standards
Count on the scale to enlarge a figure. The video shows how to create an enlargement given a scale factor and a center of enlargement. The presenter multiplies the vertical and horizontal distance by the scale factor to find the new...