Lesson Plan
EngageNY

The Scale Factor as a Percent for a Scale Drawing

For Teachers 7th Standards
Scholars build upon their knowledge of scale drawings by using percents to represent the scale factor. Individuals work with scaling in vertical, horizontal, and both directions.
Lesson Plan
EngageNY

An Exercise in Changing Scales

For Teachers 7th Standards
Classmates create a scale drawing from another scale drawing, changing the scale in the process. Groups enlarge or reduce the scale of the drawing and discuss their processes.
Lesson Plan
EngageNY

Relating Scale Drawings to Ratios and Rates

For Teachers 7th Standards
Enlargements and reductions are all about scale. The lesson introduces scale drawing to the class. Pupils determine whether the drawing is a reduction or an enlargement, and the constant of proportionality between the original and the...
Worksheet
Curated OER

Six Exercise Sets on Transformations

For Students 8th - 11th Standards
Middle and high schoolers solve fifteen problems from six exercise sets covering transformations, reflections, rotations, and enlargements. The solutions are provided.
Lesson Plan
Curated OER

Corresponding Parts of Similar Triangles

For Teachers 9th - 12th Standards
Here is a instructional activity that has learners take a look at corresponding parts of similar triangles, ratios of similarity, reductions and enlargements. They'll manipulate the scale factor (r) to observe the changes in similar...
Lesson Plan
Curated OER

Similarity

For Teachers 8th
Eighth graders understand that proportional enlargement of shapes doesn't change the angles of those shapes. In this similarity lesson, 8th graders complete exercises to create enlargements of shapes and understand similar shapes.
Assessment
Mathed Up!

Congruent Shapes

For Students 4th - 8th Standards
Are congruent shapes compatible? Congruent shapes are identical to one another, and throughout the assessment, young mathematicians identify given shapes as congruent.
Lesson Plan
Curated OER

Shape and Space: Transformations

For Teachers 6th - 8th
Students explore transformations.  In this mathematical transformations lesson, students define quadrilaterals, convert centimeters to meters, and complete a transformations worksheet.
Lesson Plan
Curated OER

II Similar

For Teachers 8th - 10th
Students, through lecture and guided practice, discover the properties of similar triangles. They use given measurements of one triangle to find a missing measurement of a similar triangle. They apply this knowledge in real-life...