Curated OER
Applying Proportionality in Scale Drawings
Sixth graders examine a blue print and discuss the reasoning behind using blue prints. In this proportionality instructional activity, students collaborate with their teammates to create a scale drawing. Once that is complete, 6th...
Curated OER
Similarity
Young scholars find the factor of proportionality in similar polygons. In this similarity of polygons lesson plan, students measure the sides and angles of polygons and derive a factor of proportionality between corresponding pairs of...
Curated OER
Proportionality: Modeling the Future
Learners explore and examine how patterns, measurement, ratios and proportions are utilized in the research development and production of airplanes. They meet a pilot from the Federal Aviation Association who describes the growth of air...
Curated OER
Savings Planning Using Tables, Line Graphs and Early Proportionality
Students use proportional reasoning to make a chart of daily savings transactions and balances. In this accounting lesson, students read word problems and complete three handouts about a bidding and accounting problem. Students finish...
Curated OER
Probability & Game Theory
Students explore the concept of probability. In this probability instructional activity, students perform various probability experiments including flipping a coin, picking m&m's out of a bag, and the birthday problem.
Curated OER
Proportionality Using "Jack & the Beanstalk"
Young scholars apply ideas of proportionality from "Jack and the Beanstalk." They compare objects that are proportional to Jack with those that are in proportion to the Giant. They measure their hands and use those measurements to...
Curated OER
Tile My Bathroom Floor
Seventh graders create a bathroom floor plan using measurement math. In this measurement lesson plan, 7th graders use measurement, proportionality, estimation, and area to design a floor plan. Students design floor tiles using centimeter...
Other
Desmos: Put the Point on the Line
In this activity, students investigate slope and how it can be explained as a ratio of change between the vertical and horizontal coordinates.
Texas Education Agency
Texas Gateway: Using Geometric Concepts and Properties to Solve Problems
Given pictorial representations, the student will use geometric concepts and properties to solve problems from art and architecture.
Other
Desmos: Tile Pile
Students explore proportional relationships in this activity as they build a ratio table in order to project how many tiles would be needed to cover the area of a floor.
Math.com
Math.com: Proportions
This lesson explains proportions along with the formula to determine if the ratios are equal. An interactive practice activity is included.
Shodor Education Foundation
Shodor Interactivate: Lesson: Conditional and Simultaneous Probability
This lesson plan deals with conditional probability and the probability of simultaneous events. Problems included in this activity tend to have solutions that are counterintuitive. This presents an opportunity to investigate more deeply...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Similarity
This site contains a lesson plan for high school age learners. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.
![Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf] Lesson Plan](https://content.lessonplanet.com/knovation/original/114246-c0ff81bc865fdf767397fcd7c31f2652.jpg?1661409083 "Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf] Lesson Plan")
PBS
Pbs Mathline: Bead Dazzling (Proportional Reasoning) [Pdf]
A comprehensive instructional activity on algebraic thinking where students create and identify patterns using proportional reasoning. Research based, this instructional activity includes technology connections, items for discussion, and...
![Pbs Mathline Lesson: Mix It Up [Pdf] Lesson Plan](https://content.lessonplanet.com/knovation/original/114249-5c08953e64aa805320eac921a29839e3.jpg?1661409096 "Pbs Mathline Lesson: Mix It Up [Pdf] Lesson Plan")
PBS
Pbs Mathline Lesson: Mix It Up [Pdf]
A lesson plan based on the story, "Oliver's Fruit Salad," where students explore the concept of proportional reasoning through modeling, student sharing, and questioning. A great introductory lesson plan for this concept that is sure to...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Proportionality
Acquire a deeper understanding of the concept of proportionality. Concise definitions, detailed examples, and an interactive worksheet to apply what you have learned.
Illustrative Mathematics
Illustrative Mathematics: G Srt Tangent Line to Two Circles
The purpose of this task is to use similar triangles and setting up a proportion in order to calculate a side length. Aligns with G-SRT.B.5.
Illustrative Mathematics
Illustrative Mathematics: G Srt Similar Triangles
The goal of this task is to examine similarity of triangles from the point of view of proportional sides, showing that this is sufficient to conclude that two triangles are similar. Aligns with HSG-SRT.A.2.
CK-12 Foundation
Ck 12: Geometry: Proportionality Relationships Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide looks at proportionality theorems for triangles and parallel lines intersected by transversals.
Common Core Sheets
Common Core Sheets: Ratios and Proportional Relationships 7.rp.2d Worksheets
Print or create worksheets or flashcards to assess students' understanding of graphs and the significance of x and y in relation to proportionality.
Common Core Sheets
Common Core Sheets: Ratios and Proportional Relationships 7.rp.2a Worksheets
Teachers can assess students' knowledge of proportional relationships with these printable worksheets. You can even create your own worksheet or flashcards.
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.
Other
All Elementary Mathematics: Proportionality and Ratio
A brief explanation of the mathematical relationship between ratio, proportion, and proportionality. Examples are included.