Wolfram Research
Wolfram Math World: Math World: Dilation
This MathWorld site gives a visual description of dilation and the different kinds of dilation in a similarity transformation.
University of Georgia
University of Georgia: Inter Math: Dilation
This site defines dilation and gives an example with a diagram. There is also an interactive activity involving a JavaSketchPad page in which you can explore dilations. In addition, be sure to follow the links to related terms, more...
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Dilations
Get independent practice working with dilations. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
CK-12 Foundation
Ck 12: Geometry: Dilation
[Free Registration/Login may be required to access all resource tools.] In this lesson students explore geometric dilations. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
CK-12 Foundation
Ck 12: Geometry: Dilation
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn to dilate a figure. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
PBS
Pbs: Human Tree: Dilations
Watch as the National Museum of Mathematics uses an image of a visitor to create a "Human Tree" using dilations. This video focuses on how similar figures can create dilations and how exponents can be used in an equation to express the...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Similarity
A guide to support parents as they work with their students in similarity.
Illustrative Mathematics
Illustrative Mathematics: G Srt Dilating a Line
In this task, students investigate a dilation of a line segment and how the length of the dilation relates to the scale factor. Aligns with G-SRT.A.1.
Illustrative Mathematics
Illustrative Mathematics: G Co Dilations and Distances
The goal of this task is to study the impact of dilations on distances between points. Aligns with G-CO.A.2.
Texas Instruments
Texas Instruments: Math Today Wing Tabs Save Fuel
Using the USA TODAY Infograph, 'Wing tabs save fuel', ratios and proportions will be used to explore the concept of similarity between a drawing/model and the actual dimensions. The effects of dilation (size change) on an image and...
Illustrative Mathematics
Illustrative Mathematics: G Gpe Scaling a Triangle in the Coordinate Plane
The goal of this task is to apply dilations to a triangle in the coordinate plane. Students will need to find the coordinates of a point which cuts a given segment into one third and into two thirds. The two dilated triangles share a...
University of Virginia
University Virginia/time Dilation: A Worked Example
Here's a solved problem in time dilation. It's still not easy to follow, but it's doable. The math is not difficult, but the mathematical thinking is demanding.
University of Georgia
University of Georgia: Inter Math: Transformation
This site defines transformation and lists several different examples of transformations. Be sure to follow the links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving...
Other
Nearpod: Transformations on Coordinate Planes
In this instructional activity on transformations on coordinate planes, 8th graders explore dilation, translation, reflection, and rotation of shapes within a coordinate plane.
Other
Nearpod: Transformations & Congruence
In this lesson on transformations and congruence, 8th graders will investigate dilations, rotations, reflections, and translations on the coordinate plane and the figures that result from these transformations.
Other
Nearpod: Introduction to Geometric Transformations
In this lesson, learners will learn how to describe and identify reflections, rotations, translations, and dilations.
Oswego City School District
Regents Exam Prep Center: General "Transformation" Vocabulary
This site offers a short discussion of transformations. The discussion has few pictures and expresses the transformations in terms of relative coordinates rather than pictures.