Similar Figures Teacher Resources

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Play with polygons and explore the concept of congruence. Interested minds discuss how two objects are similar and different then define congruent and similar figures. This lesson employs the use of three different centers. They use geoboards to make congruent figures, sort pattern blocks according to congruences and use a website to play a congruent concentration game.
Students explore the concept of finding area of similar figures. In this finding area of similar figures lesson, students use pattern blocks to construct similar figures. Students trace their construction and find the area. Students determine if the ratio between similar figures can be used to find the area of similar figures.
Students explore the concept of similar figures.  In this similar figures lesson, students use their Ti-Nspire to determine if two figures are similar.  Students use angle measures, ratios, and side lengths to determine if two figures are similar. Students apply similar figures to a problem involving a determining the height of a cliff.
Students calculate the area and the perimeter of triangles. In this geometry lesson plan, students identify the ratio and proportion of similar figures.
In this expanding similar figures instructional activity, 7th graders use pattern blocks to build similar figures. They record the number of pattern blocks it takes to make the next similar figure using the label "units of area." They explain their work by responding to an open-ended question.
Sixth graders practice proportionality and ratios. In this proportionality lesson, 6th graders study congruent shapes and triangles. Students use grid paper to draw similar figures. Students explain similar figures in their journal.
Students explore the concept of similar figures. In this similar figures instructional activity, students develop the idea that similar figures are a different size but the same shape by comparing similar rectangles. Students use patty paper to trace their hands and discuss if their tracing is similar to their hands.
Pupils investigate the proportions of similar and non-similar geometric figures. Using computer software, they define corresponding sides of similar figures. Students use this information to find missing lengths of similar figures.
Upper elementary and middle schoolers examine the Volumes of Similar Figures. They investigate the relationship between corresponding sides and evaluate the volume of similar figures. Pupils record their findings on various activity worksheets.
Students investigate similar figures using pattern blocks. In this similar figures lesson, students create figures using pattern blocks. Students keep track of the area of their figures.
In this similar figures activity, students identify similar figures from models and given dimensions. This two-page activity contains ten multiple choice problems.
Students self-discover the relationships between similar figures. They take what they have been taught about these relationships and apply these concepets to problem-solving. Students discuss what they discovered during their internet research.
Similar figures have the same shape, the same corresponding angles, but different lengths of their corresponding sides. The teacher explains just what all that means. She demonstrates how to compare the two shapes to prove they are similar.
Stations energize geometry learners to discover and create similar figures using congruent angles and proportional sides in a well-organized lesson plan. From the beginning discussion of equal ratios to the closing assessment of proportion applications, this instructional activity is rich in student learning.
High schoolers discover how to solve proportions and find the missing sides of similar figures using the scale factor. Along with learning how to use a scale factor to find a missing value, learners also access math videos, and play an online game which will test their ability to perform these calculations. An outstanding math activity that utilizes technology. Very good!
Learners investigate properties of similar figures. In this properties of similar figures lesson, pupils construct similar figures using Cabri Jr. They dilate their figure to create a similar one, and discuss the relationships between the angle measures and side lengths of the two similar figures.
Students explore the concept of congruent and similar figures.  In this congruent and similar figure lesson, students classify pictures according to congruent and similar figures.  Students measure the lengths of various figures to determine if they are congruent, similar, or neither.  Students measure and compare the diagonals of various polygons such as parallelograms, rectangles, squares, trapezoids, and rhombuses. 
Students discover and explore a special kind of tiling of the plane. Rep-tiles are geometric figures such that n copies can fit together to form a larger, similar figure. They realize that any of the similar figures can be used to tile the plane.
Tenth graders explore similar figures.  In this geometry lesson, 10th graders investigate the ratios between corresponding parts of regular polygons using linear measurement.  Students make and test conjectures regarding relationship between  measurements of perimeter and area.
A theoretical NASA project is the foundation of this activity, in which learners will word to determine congruent and similar figures. They solve 4 word problems where they measure, draw and identify congruent and similar figures from diagrams.

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