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Activity
Education Development Center

Anita's Way to Add Fractions with Unlike Denominators

For Teachers 5th - 6th Standards
Could you develop your own way to add fractions with unlike denominators? An in-depth task has scholars examine a fictional conversation between several people in which they discuss a method of adding fractions with unlike denominators....
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Worksheet
Curated OER

Intuitive Notion of Dilation

For Students 7th - 8th
In this dilation worksheet, students identify pictures of a dilation. They determine the scale factor and length of missing sides. This one-page worksheet contains ten problems.
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Worksheet
Curated OER

Enlargement

For Students 6th
In this enlargement worksheet, 6th graders solve and complete 3 different types of problems. First, they enlarge the given shape by a scale factor of 3. Then, students find the scale factor of the next enlargement. Finally, they enlarge...
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Worksheet
Curated OER

Similar Objects

For Students 8th - 12th
In this geometry instructional activity, students walk through the process of comparing the scale factor of two cylinders' surface area and volume and answer questions about the scale factor of prisms. There are 15 questions.
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Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 10th graders solve and graph 8 different problems that include various transformations. First, they write a rule for the composition of a dilation of a scale factor. Then, students determine whether a graphed...
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Worksheet
Curated OER

Exploring Similar Figures

For Students 10th
For this similar figures worksheet, 10th graders solve and measure 10 different angles that are similar. First, they determine which angel corresponds to each given angle. Then, students determine the scale factor of a particular...
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Worksheet
Curated OER

Similarity

For Students 7th - 12th
In this similarity worksheet, students identify similar shapes.  They determine the scale factor of the similar shapes and find their volume and area.  Students enlarge shapes according to the given scale factor.  They determine the...
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Worksheet
Curated OER

Earthquake Power

For Students 8th - 10th
In this earthquakes worksheet, students learn about the measurements of earthquakes on the Richter scale. They answer six questions about the magnitudes and sizes of earthquakes using two tables of data about earthquakes and the Richter...
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Worksheet
Curated OER

Scale of Organisms

For Students 6th - 10th
In this scale activity, students use the SI system to compare the sizes of some of the smallest and largest organisms on Earth. This activity has 7 problems to solve.
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Assessment
EngageNY

Mid-Module Assessment Task: Grade 8 Module 3

For Students 8th Standards
How well does the class understand dilations? The three-part assessment presents problems related to the properties of dilations. Pupils perform dilations and determine whether a dilation is responsible for a specific image.
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Activity
Indian Institute of Technology

Could King Kong Exist?

For Teachers 9th - 12th Standards
The title says it all: Could King Kong exist? Investigate how increasing the dimensions of an object affects its surface area and volume to mathematically conclude whether a creature with the weight and height of King Kong could actually...
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Lesson Plan
EngageNY

First Consequences of FTS

For Teachers 8th Standards
Challenge the young mathematicians to find the exact coordinates of a dilated point. The fifth segment in a 16-part series introduces the class to the converse of the Fundamental Theorem of Similarity. Scholars use the theorem to find...
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Activity
Illustrative Mathematics

Sand Under the Swing Set

For Teachers 7th - 9th Standards
Help the local elementary school fix their playground by calculating the amount of sand needed near the swing set. The problem practices setting up proportions and ratios with three different options for solving. You can chose the option...
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Assessment
EngageNY

End-of-Module Assessment Task - Grade 8 Mathematics (Module 3)

For Students 8th Standards
Everything the class knows about similarity in one small package. The last portion of a 16-part series is a three-question assessment. In it, pupils demonstrate their application of similar figures and their associated transformations. 
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Assessment
Inside Mathematics

Hopewell Geometry

For Teachers 9th - 12th Standards
The Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...
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Lesson Plan
EngageNY

Matrix Notation Encompasses New Transformations!

For Teachers 11th - 12th Standards
Class members make a real connection to matrices in the 25th part of a series of 32 by looking at the identity matrix and making the connection to the multiplicative identity in the real numbers. Pupils explore different matrices and...
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Assessment3:06
Mathed Up!

Mixed Transformations

For Students 8th - 11th Standards
Viewers learn how to identify and perform a variety of transformations with a video that provides seven items on transformations. Pupils demonstrate their understanding of dilations, reflections, rotations, and translations. The video...
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Worksheet
Curated OER

Unit 14 - Loci and Transformations

For Students 9th - 12th
In this transformations worksheet, students solve 25 short answer problems.  Students dilate, reflect, and translate points and figures in the coordinate plane.  Students determine scale factors and lines of symmetry of figures.
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Worksheet
Curated OER

Proportions 1

For Students 9th - 11th
In this proportion worksheet, students find the missing side of 4 shapes that are similar to their mate. Shapes include triangles and quadrilaterals,. In the second part of the worksheet, students use the scale factor to find missing...
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Interactive
Curated OER

Similar Figures

For Students 7th - 10th
In this similar figures worksheet, students identify the meaning of similar, corresponding sides, and congruent.  They use proportions to find the length of a missing side.  Students dilate given figures according to a scale factor. ...
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Worksheet
Curated OER

Problem-Solving Decisions: Reasonable Answers

For Students 5th - 6th
In this problem solving worksheet, students answer 6 questions pertaining to a story problem about a tabletop scale model of the Nile River.
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Worksheet
Curated OER

Dimensional Analysis

For Students 9th - 10th
In this mathematics worksheet, students apply dimensional analysis to solving each problem. They identify the conversion factor and describe a unique characteristic of a conversion factor. Students also identify the unit in the final...
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Worksheet
Curated OER

Change Through Time

For Students 9th - 12th
In this evolution instructional activity, students will complete a table by writing in the era and biological event based on 4 different time periods of Earth's history. Students will answer 8 fill in the blank questions based on the...
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Worksheet
Curated OER

Enlargement Worksheet

For Students 8th - 10th
In this geometry worksheet, students figure out the center of enlargement and the scale being used. They find the image and pre-image and label it. There are 7 questions.

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