Curated OER
Million Dollar Gift
Third graders create a box big enough to hold a million dollars. This is a project fun to do near the winter holidays with inexpensive gifts included in the boxes. This hands-on lesson plan very effectively demonstrates the concept of...
CK-12 Foundation
Ck 12: Geometry: Indirect Measurement
[Free Registration/Login may be required to access all resource tools.] In this lesson students find unknown measurements indirectly using the ratios and proportions of similar figures. Students examine guided notes, review guided...
CK-12 Foundation
Ck 12: Geometry: Indirect Measurement
[Free Registration/Login may be required to access all resource tools.] In this lesson students use similar triangles and proportions to find measurements indirectly. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Geometry: Indirect Measurement
[Free Registration/Login may be required to access all resource tools.] Recognize similarity and use similar figures to solve problems by using indirect measurement
CK-12 Foundation
Ck 12: Scale and Indirect Measurement Applications: Scale Model
[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...
PBS
Pbs: Solve the Ratio and Proportion Problem Beyond a Shadow of a Doubt
In this video, Harry finds money on the sidewalk. He uses ratio, proportion, and some knowledge about shadows to return it to the rightful owner. In the accompanying classroom activity, students investigate whether there is a consistent...
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Proporcionalidad
In Spanish. In this unit you will practice proportion. You will be able to distinguish whether quantities are or not in proportion and solve problems of direct and indirect proportion.
CK-12 Foundation
Ck 12: Algebra: Scale and Indirect Measurement Applications
[Free Registration/Login may be required to access all resource tools.] Use map scales and proportions to solve for unknown distances.
Mocomi & Anibrain Digital Technologies
Mocomi: Ratio and Proportion
Gives examples of ratios and proportions and how to solve them.
CK-12 Foundation
Ck 12: Geometry: Indirect Measurement
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to use similar triangles and proportions to find measurements indirectly. Students examine guided notes, review guided practice, watch...
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.
CK-12 Foundation
Ck 12: Geometry: Unknown Measures of Similar Figures
[Free Registration/Login may be required to access all resource tools.] Use proportions to find unknown measures in similar figures and then apply these measures to indirect measurement.
National High Magnetic Field Laboratory
Magnet Academy: Georg Ohm
Georg Simon Ohm had humble roots and struggled financially throughout most of his life, but the German physicist is well known today for his formulation of a law, termed Ohm's law, describing the mathematical relationship between...
Alabama Learning Exchange
Alex: Is It Really That Big?
Just how tall is that object? In this lesson, young scholars will participate in an outdoor group activity using shadows to extend their knowledge of proportions to solve problems dealing with similarity. The cooperative learning groups...
CK-12 Foundation
Ck 12: Geometry: Unknown Measures of Similar Figures
[Free Registration/Login may be required to access all resource tools.] Find unknown side lengths in similar figures.