CK-12 Foundation
Ck 12: Geometry: Ratios and Proportions Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide reviews ratios, proportions, and cross-multiplication.
Better Lesson
Better Lesson: Architecture With Shapes
Determining the differences between similar shapes in geometry is more meaningful when the students create architectural structures using the different shapes.
Math Is Fun
Math Is Fun: Similar
Students investigate when two shapes are similar. Definitions and examples are included.
CK-12 Foundation
Ck 12: Geometry: Perimeter and Area Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide looks at the definitions and units for perimeter, area, and circumference, and at the perimeter and area of different shapes, including regular...
Mangahigh
Mangahigh: Shape: Recognize Congruent Shapes
Determine whether shapes are congruent or similar.
Texas Education Agency
Texas Gateway: Writing Geometric Relationships
Given information in a geometric context, students will be able to use informal arguments to establish facts about the angle sum and exterior angle of triangles, the angles created when parallel lines are cut by a transversal, and the...
CK-12 Foundation
Ck 12: Indirect Measurement
[Free Registration/Login Required] Students use similar triangles to determine the height of the base of a tree house. Click learn more to watch a video and click challenge me to answer a practice question.
Alabama Learning Exchange
Alex: How Tall Is the School's Flagpole?
The purpose of this lesson is to help students apply math concepts concerning similar triangles and trigonometric functions to real life situations. The students learn how to take these concepts and use them to find measurements of...
Khan Academy
Khan Academy: Congruence and Transformations
Given a pair of figures in the coordinate plane, try to map one onto the other and determine whether they are congruent. Includes examples of glide reflections. Students receive immediate feedback and have the opportunity to try...
CK-12 Foundation
Ck 12: Geometry: Forms of Ratios
[Free Registration/Login may be required to access all resource tools.] In this lesson students find and reduce ratios. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
CK-12 Foundation
Ck 12: Geometry: Proportion Properties
[Free Registration/Login may be required to access all resource tools.] Apply proportion properties.
CK-12 Foundation
Ck 12: Geometry: Proportion Properties
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to set up and solve proportions.
CK-12 Foundation
Ck 12: Geometry: Forms of Ratios
[Free Registration/Login may be required to access all resource tools.] This concept teaches students what a ratio is and how to use one. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Sophia Learning
Sophia: Prisms and Cylinders Tutorial
Compare a prism and a cylinder in order to determine the similarities of calculating the volume.
Mangahigh
Mangahigh: Shape: Length, Area and Volume Scale Factors
Explore the relationships between area and volume based upon length.
Hunkins Experiments
Hunkin's Experiments:how to Measure the Height of a Tree
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This part...