Texas Instruments
Texas Instruments: Just How Many Are There?
This activity introduces students to the concept of using proportional reasoning to estimate the size of an animal population.
Texas Instruments
Texas Instruments: Meal Manager
In this activity, students can use percentages and proportional reasoning skills to solve problems.
Texas Instruments
Texas Instruments: Stepping Stones
In this activity, students use volume formulas and proportional reasoning to calculate the amount of concrete needed to make stepping stones of a specific size.
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...
Illustrative Mathematics
Illustrative Mathematics: 7.rp Art Class, Variation 2
In this lesson plan, 7th graders explore proportional relastionships using paint colors.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Buying Coffee
In this lesson, 7th graders explore the proportional relationship between coffee and the cost.
Texas Instruments
Texas Instruments: Set Design
In this activity, students can use similarity concepts, and the dimensions of the carvings on Mt. Rushmore to create a proportional representation of the carvings for a stage backdrop.
University of South Florida
Fcat: The Shadow Knows (Ratio, Proportion & Measurement)
Students use their height and the length of the shadow to determine the height of buildings. A great outdoor activity to learn about proportions and ratios.
Khan Academy
Khan Academy: Equivalent Expressions With Percent Problems
Practice equivalent expressions with percent problems.
PBS
Pbs: Soul Food Junkies: Portions
Consider the relationships among health, portion size, and traditional soul food and fast food diets in this video from the Center for Asian American Media.
Other
The Education Center: Breakfast It's a Big Deal!
This is a PDF worksheet where students use a real world scenario to find percents using proportional reasoning.
Texas Instruments
Texas Instruments: Banquet Meal
In this activity, students use proportional reasoning skills to increase a family-size recipe to a banquet-size recipe.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Comparing Years
For this lesson, 7th graders determine the proportional relationships to determine the percent decrease.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Chess Club
Seventh graders use their knowledge of proportional relationships to determine the percent increase or decrease.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Two School Dance
The purpose of this task is to see how well students students understand and reason with ratios. This task was adapted from problem #14 on the 2011 American Mathematics Competition (AMC) 8 Test. Aligns with 7.RP.A.3. The site provides a...
Other
Nearpod: Interpreting Slope & Y Intercept
In this lesson plan on interpreting slope and y-intercept, 8th graders will learn how to identify the slope and the y-intercept of a line in order to identify if a proportion is demonstrated.
University of Cambridge
University of Cambridge: Maths and Sports: Triathlon and Fitness
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories? This activity provides a real-life context for working with proportionality, speed, rates, and units of measurement and is aimed...
Illustrative Mathematics
Illustrative Mathematics: 6.rp, 7.rp.3 Climbing the Steps of El Castillo
A performance task in which students solve a problem involving a proportional relationship. The problem is: The temple at the top of the pyramid is approximately 24 meters above the ground, and there are 91 steps leading up to the...
Other
Nearpod: Percent of Change
In this instructional activity, 7th graders will learn how to solve percent of change problems.
PBS
Pbs: Scale City: Scaling Up Recipes and Circles in the Real World
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...
University of Texas
Inside Mathematics: Snail Pace [Pdf]
This task challenges a student to demonstrate understanding of concepts involved in rates. Students must make sense of proportional relationships of speed in minutes and inches.
Google
Google for Education: Percent Change
Students analyze proportional relationships and use them to solve real-world and mathematical problems. Here, look for patterns to understand and solve percent change problems.
Texas Education Agency
Texas Gateway: Determining Area: Sectors of Circles
Students will use proportional reasoning to develop formulas to determine the area of sectors of circles. Students will then solve problems involving the area of sectors of circles.