Curated OER
Bagel Algebra
Ninth graders apply proportional reasoning to a real-life situation. In this Algebra I lesson, 9th graders explore a series of equations that relate to a display sign that compares the owner’s bagels to competitors bagels. ...
Curated OER
History of Our Solar System Time Line
Ninth graders explore the concept of ratios. In this ratio lesson, 9th graders construct a to scale time line that starts at the beginning of time. Students determine the correct placement of big events in time such as when the dinosaurs...
Curated OER
Dilation
Tenth graders identidy and define various geometry terms, Students create exact replicas of a shape that is either smaller or larger than the original shape. Students prove that their entire shapes are larger or smaller in the same...
Curated OER
The Golden Rectangle
Students explore the concept of the golden ratio. In this golden ratio instructional activity, students measure objects to determine if their measurements fit the golden ratio. Students calculate the average measurements of the class.
Curated OER
M&M's
Young scholars use M&M candies to show fractions, percents, and ratios. Individually, they complete a worksheet using their candies and solving equations of greater than or less than. They review their answers and strategies used...
Curated OER
PrimeTime Math: Cliffbound!
Young scholars are involved in a cooperative learning environment that analyzes fractions, ratios to time and distance, equivalent fractions and numerical relationships and expressions in quantitative problems. They take notes, relate...
Curated OER
The Snack Bar
Sixth graders complete a purchase order. In this ratios and patterns lesson, 6th graders work in groups to complete a purchase order for a grand opening of the school snack bar. Students use rations to figure out the need and quantity...
Curated OER
Problem Solving Using Percentages
Students explore the concept of percentages. In this percentages lesson, students find the percentages of various colored m&m's in their bags. Students find the cost of items before and after a discount. Students use proportions to...
Curated OER
Word Based Proportions
In this word based proportions worksheet, 6th graders solve and complete 10 different problems that include determining various word based proportions. They determine the number of miles a person can travel in particular number of hours....
Illustrative Mathematics
Robot Races
Analyze data on a graph to answer three questions after a robot race. Learners practice comparing ratios and reading points on a graph. Answers may vary on the last question based on accuracy of graphing. Use the lesson along with...
Illustrative Mathematics
Running at a Constant Speed
The learner must use the given constant speed to find the unit rate. A table is made in order to relate the speed to the time and the distance. From the table, learners are able to see the unit rate in miles per minute and miles per...
Utah Education Network (UEN)
Linear Relationships: Tables, Equations, and Graphs
Pupils explore the concept of linear relationships. They discuss real-world examples of independent and dependent relationships. In addition, they use tables, graphs, and equations to represent linear relationships. They also use ordered...
Curated OER
The Distance Formula and Marching Nonviolently for Social Change
Students explore the distance formula using real world data from nonviolent marches for social change. For this secondary mathematics lesson, students investigate the marches of Gandhi and King using maps overlaid with a coordinate...
Curated OER
Ratios, Proportions, and Cross-multiplication
Students use cross-multiplication to find the unknown respiration rate of an astronaut. In this multiplication lesson plan, students also use the same process to find missing values in proportions.
Curated OER
Proportionality in Tables, Graphs, and Equations
Learners create different methods to analyze their data. In this algebra lesson, students differentiate between proportion and non-proportional graph. They use the TI-Navigator to create the graphs and move them around to make their...
Curated OER
Ratios (Cost of a Habit)
Students consider an individual habit and its cost. They study ratios and proportions, and use that knowledge to calculate the cost of a habit over extended periods of time. write a detailed comparison of the costs.
Curated OER
Proportions in Stories
Students solve problems dealing with ratios and proportions. In this algebra lesson, students rewrite word problems using equations and symbols. They correctly convert between percents and decimals.
Curated OER
Mean Twisters - Mean Proportional
In this mean proportional worksheet, students work in pairs to solve right triangle problems. They use ratios and proportions of similar triangles to determine a missing length. This two-page worksheet contains 16 problems.
Curated OER
Math: "Scales"
Third graders investigate ratios and rates. In this third grade mathematics lesson, 3rd graders identify equal ratios and rate and test for proportionality. This lesson is created to be use in conjunctions with a particular...
Curated OER
Proportional Division
In this proportional division activity, students read through an example and complete 5 practice problems using proportional division. Students then complete 18 problems on their own in which they use proportional division. They can...
Mathematics Assessment Project
Sharing Costs Equitably: Traveling to School
Drive or take the school bus? Class members determine the amount each student would have to pay in a carpool situation. They then evaluate the cost in a set of provided examples. I think I'd rather take the school...
EngageNY
Population Problems
Find the percent of the population that meets the criteria. The 17th segment of a 20-part unit presents problems that involve percents of a population. Pupils use tape diagrams to create equations to find the percents of subgroups...
EngageNY
Special Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles
Why are right triangles so special? Pupils begin their study of right triangles by examining similar right triangles. Verifying through proofs, scholars recognize the three similar right triangles formed by drawing the altitude. Once...