Curated OER
Direct and Inverse Variation
In this direct and indirect variation worksheet, students solve 4 direct variations. Students then solve 4 indirect variations.
Corbett Maths
Inverse Proportion
Take an indirect view of proportionality. Using a similar approach of direct variation, the resource shows how to solve inverse proportions. The video steps through finding the constant of proportionality to write the formula for the...
Curated OER
The Reasons for the Seasons
Young scientists use a globe and a light to simulate the rotation of the earth and sun to show the seasons. Additionally, they simulate direct sunlight and indirect sunlight showing intensity of the sun, and answer questions based on...
Las Cumbres Observatory
Measure the Diameter of the Sun
Measuring the diameter of the sun may get a little heated, but using an indirect approach can help individuals keep their cool. Learners use the reflection of the sun to measure how long it takes for it to move one diameter. Using the...
Curated OER
Geology and the Battle of Gettysburg
Students create geologic maps of the Gettysburg battlefield. In this geologic skills instructional activity, students consider the variations of Earth's surfaces and explore strategies employed by the North and South in the Battle of...
Curated OER
Colors and Mural Painting
Fifth graders identify shape styled by color and hue techniques, and individually design a variation of color mixtures once positioned on paper.
Curated OER
PLANETS IN PROPORTION
Students discover scales for both the solar bodies' relative sizes and their distances from the sun. They find equatorial circumference and volumes of their solar bodies. Students apply estimation strategies and proportioanl reasoning to...
Curated OER
Solar Cycle
Students explore the solar cycle through a series of experiments. In this space science lesson, students construct and evaluate solar cycle graphs. They explain how this phenomenon affects the Earth.
Curated OER
Colors and Mural Painting
Visual arts lesson featuring a group mural that is constructed by each student soda straw paintings that reflects the use of shape, color and hue.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Direct and Indirect Variation
A student asks Dr. Math for help to understand the concept of direct and inverse variation. The Dr. begins with the very basics and gives a great discussion on variation. The Dr. includes the thinking process and examples.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Direct and Indirect Variation
Dr. Math addresses the difference between direct and indirect variation. The Dr. gives several examples through his explanation, using real-world scenarios. The Dr. describes how problems are typically stated for indirect variation and...
Other
Jiskha Math Homework Help: Direct and Indirect Variations
Jiskha.com offers math homework help that provides a general overview of direct and indirect variation, including a few simple graphing examples.
Cengage Learning
Cengage: Variation
Learn about the mathematical models for both direct and indirect variation on this site.
CK-12 Foundation
Ck 12: Algebra: Scale and Indirect Measurement Applications
[Free Registration/Login may be required to access all resource tools.] Learn how to solve problems using scale and indirect measurement.
CK-12 Foundation
Ck 12: Algebra: Inverse Variation Models
[Free Registration/Login may be required to access all resource tools.] This lesson shows you how to determine if a set of data is related indirectly.
CK-12 Foundation
Ck 12: Algebra: Graphs of Rational Functions Study Guide
This comprehensive study guide highlights the main terms and formulas needed to understand graphs of rational functions. Examples are included.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: High School Basic Algebra Review
An overview of basic high school algebra topics can be found here. Absolute value, signed numbers, inequalities and equations, mixture problems, and direct and indirect variation are all listed, each with links to questions posed by...