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...