CK-12 Foundation
Ck 12: Geometry: Similar Polygons and Scale Factors
[Free Registration/Login may be required to access all resource tools.] This concept teaches students what similar polygons are and how to use scale factors to solve for missing information in similar polygons.
Other
I Coach Math: Scale Factor
Explains what a scale factor is and scenarios where it is used. Presents an example problem and its solution, and includes a video. [9:36]
PBS
Pbs Learning Media: Kid Vid: Scaling Up Rectangles
Watch a student think through a problem about how the area of a rectangle changes when both sides are increased by the same scale factor and use online tools to demonstrate understanding of concepts related to area and scale factors in...
Alabama Learning Exchange
Alex: Using Scale Factors: Drawing Your Body to Scale
Teachers will use this lesson plan to review and apply skills involving scale factors. Teachers will use illuminations website to review scale factor. Then students will be given instructions to draw their bodies to scale.
CK-12 Foundation
Ck 12: Arithmetic: Proportions to Find Scale Ratios
[Free Registration/Login may be required to access all resource tools.] In this lesson students find a scale, ratio, or proportion given actual and scale dimensions. Students examine guided notes, review guided practice, watch...
PBS
Pbs: Scale City: Scaling Up Rectangles in the Real World
In this video, students explore Depression-era post office murals and modern outdoor murals to learn how artists use proportional reasoning and measurement to create large-scale paintings. The video ends with the question, "How do...
Sophia Learning
Sophia: Similarity
This learning tutorial describes the characteristics of similar figures and how to use scale factor and proportions to determine missing side lengths. The lesson includes PowerPoint presentations and videos demonstrating how to solve...
E-learning for Kids
E Learning for Kids: Math: Dance Performance: Position on a Map
This interactive website allows students to practice their map skills including scale factors on a map.
Alabama Learning Exchange
Alex: To Scale or Not to Scale? That Is the Factor.
Students will learn to solve proportions and find missing sides of similar figures using the scale factor. This lesson is best taught before the concept of cross multiplication is developed. Not only will the student learn the process of...
ClassFlow
Class Flow: Similar Figures
[Free Registration/Login Required] This flipchart is designed to introduce proportional relationships between similar figures. It also introduces the concept of scale factor.
PBS
Pbs: Human Tree: Ratios
Watch as the National Museum of Mathematics creates an interesting series of images using ratios. This video focuses on the proportional relationship observed in fractals and challenges you to do some critical thinking using ratios and...