Curated OER
A Geometry Worksheet - Similar Triangles
In this similar triangles worksheet, students find the scale factor of 6 sets of similar triangles. Students find the scale factor of two similar triangles given a sketch with measurements. Students use proportions to find a missing side...
Curated OER
Using the Distance Formula
In this distance formula activity, students solve and complete 30 various types of problems. First, they find the exact distance between each pair of points and make a sketch of the situation. Then, students find the center, horizontal...
Texas Instruments
What's the Scale?
Pupils will analyze scales as related to models and real life in this geometry lesson. They work together to compare the dimensions on a model as compared to the real building.
Curated OER
Measuring Speed in the Universe
In this measuring speed in the universe worksheet, students use photographs of 3 astronomical phenomena including supernova explosions, coronal mass ejections and solar flare shock waves to find how fast they move. The photographs show...
Curated OER
Similarity
In this similarity activity, 9th graders solve and complete 6 different types of problems. First, they complete the statement in the box shown. Then, students determine whether they agree or disagree with the statement and given reasons....
Curated OER
Simplifying Ratios
In this simplifying ratios instructional activity, 10th graders solve and complete 24 various types of problems. First, they complete each ratio and reduce when necessary. Then, students find the length and width of each rectangle...
Curated OER
Geometry Concepts and Applications
In this concepts and applications review activity, 10th graders solve and complete 40 various types of multiple choice problems. First, they write the equation of a vertical line passing through a point. Then, students find the...
Curated OER
Scale Factor- Surface Area and Volume
Young scholars calculate the surface area and volume of shapes. In this geometry activity, students create different scales and calculate the volume and area for each shape. They compare and contrast between the different scales and shapes.
Curated OER
Similar Objects
For this geometry worksheet, 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.
Curated OER
Scale factors: Ratios and Proportions
Students create building and models using scale factors. In this geometry lesson, students apply the properties of ratio and proportion to solve problems. They identify the means and extremes property of cross multiplication.
Curated OER
Maps
Students figure out the mileage from one state to another using a map. In this map lesson, students look at the scale factor and turn it into a fraction. They measure the distance between two cities and use the proportion to find the...
Curated OER
Similarity
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...
Curated OER
Enlargement
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...
Curated OER
Intuitive Notion of Dilation
In this dilation learning exercise, students identify pictures of a dilation. They determine the scale factor and length of missing sides. This one-page learning exercise contains ten problems.
Curated OER
Triangles
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...
Curated OER
Exploring Similar Figures
In 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...
Curated OER
Scale Factors
In this scale factors worksheet, 6th graders solve 10 different problems that include types of scale factors. First, they determine the missing dimensions in each problem. Then, students round their responses to the nearest tenth before...
Curated OER
Exploring Similar Polygons
In this exploring similar polygons instructional activity, 10th graders solve 9 various problems that are related to similar polygons. First, they define similar and the symbol used to identify similar to another. Then, students find the...
Curated OER
Solve for Scale Factors Using Proportions
Eighth graders solve problems using proportions with scaled drawings. They work with maps and blue-prints discussing scales and plans and examine different polygons and figure out the scale factors or proportions they have been changed by.
Curated OER
Dilation
Tenth graders identidy and define various geometry terms, Students create exact replicas of a shape that is either smaller or larger than the original shape. Students prove that their entire shapes are larger or smaller in the same...
Curated OER
Investigating Scale Factors with the Geometer's Sketchpad
Students use Geometer's Sketchpad to examine the scale factor when in is applied to the length of a figure's sides. They look at how the scale factor affects the side lengths, perimeter, and area of the figure that result. They work with...
Curated OER
Baseball Proportion
Eighth graders measure regular baseball bats and souvenir bats in centimeters. They determine how tall a person would be to be in proportion to the souvenir bat, create a poster depicting the person, and explain the proportional...
Curated OER
Venn Diagrams & Word Problems
Students explore the concept of Venn Diagrams through word problems. In this Venn Diagram lesson, students solve word problems about groups of people using Venn Diagrams. Students use survey results about MySpace and Facebook in a Venn...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Area Builder
Create shapes using colorful blocks, and explore the relationship between perimeter and area. CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it