[Free Registration/Login may be required to access all resource tools.] This study guide reviews ratios, proportions, and cross-multiplication.

A guide to support parents as they work with their students in ratios and proportional relationships.

[Free Registration/Login Required] Students explore scale and indirect measurement by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the...

Seventh graders will explore scale and use it to find measurements in scale drawings.

In this video, students visit the Kentucky Horse Park where they are introduced to the question How are speed, time, and distance interrelated? The accompanying activity builds on a demonstration from the video of the length of Man o'...

In this video-through footage of the calliope aboard the Belle of Louisville, a church pipe organ, and various instruments at a recording studio-students are introduced to the mathematical concept that the length of a musical pipe or a...

Explore ratios in terms of scales on a map.

In this lesson, students create a class mural by using scale, ratio, and proportion. Media resources and teacher materials are included.

[Free Registration/Login may be required to access all resource tools.] Identify unit scale and use unit scale when problem solving.

For this lesson students will explore the use of pictures and maps to represent physical spaces. We will explore the concepts of scale and conversions between pictures, maps and real-world units. Conversions between kilometers and miles,...

While students gain an understand of basic environmental toxicology, they explore the health impacts of industrialization on society in these lessons. This is a cross curricular unit that addresses standards for eleventh grade in math,...

Use this information to build a scale model of the Great Pyramid. Explore the information available about the height, base and angles of this pyramid. Great opportunity to apply the principles of using a scale model.

Understanding history requires students to be able to see the big picture. This teaching unit introduces students to tools they can use to investigate history. Topics covered include cartography, chronography, and maps of space, time and...

[Free Registration/Login may be required to access all resource tools.] In this lesson studnets find actual or scale dimensions using a given scale, ratio, or proportion. Students examine guided notes, review guided practice, watch...

[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...

In this video, life-size replicas help demonstrate one-dimensional scaling and the ratio relationship between two real-world quantities. The accompanying classroom activity helps students understand how ratios and proportions can help...

This video explores scale models, including 1:12 dollhouse models, 1:24 railroad models, and 1:192 architectural models. It explains what the different ratios represent and asks students to consider how they can use measurement and...

Examine some of the complexities and complications inherent in the development of a micro engine. This video focuses on how MIT researchers have to consider proportions comparing volume and surface area when factoring heat loss, taking...

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...

In this interactive, students explore how to use shadows, proportional reasoning, and similar figures to determine the unknown height of an object. The interactive allows students to explore the proportional relationships among the...

In this video, students visit a small-town festival that features the world's largest stainless steel skillet. In addition to a question about scaling recipes, they also are asked how increasing or decreasing the radius of a circle...

[Free Registration/Login may be required to access all resource tools.] Read and interpret scale drawings and floor plans to find scale dimensions and actual dimensions

Hooke's law says that the opposing force of a spring is directly proportional to the amount by which the spring is stretched. How accurately Hooke's law describe the behavior of real springs? Can springs be used to make accurate scales...

In this video, students take a quick trip through the history of drive-in theaters and are then asked to consider the question, "What is the relationship between the size of an object's shadow and the object's distance from a light...