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Interactive
CK-12 Foundation

Radical Equations: Geometric Visual of a Square Root

For Students 8th - 11th Standards
How can you draw a number? A set of questions takes learners through the reasoning for why a geometric construction can be drawn to represent the square root of a number. An interactive helps visualize the construction.
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Lesson Plan
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Illustrative Mathematics

The Geometry of Letters

For Teachers 3rd - 5th Standards
Use the alphabet as a tool for teaching your class about geometric figures. Break apart capital letters into line segments and arcs. Classify angles as right, acute, or obtuse. Identify parallel and perpendicular lines. An excellent...
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Worksheet
Curated OER

Infinite Geometric Series

For Students 11th
In this infinite geometric series worksheet, 11th graders solve and complete 33 various types of problems. First, they find the sum of the infinite geometric series for each of the given. Then, students find the range of values for each...
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Worksheet
Curated OER

Infinite Geometric Series

For Students 10th - 12th
In this geometric series instructional activity, students examine a given geometric series to determine if the series converges or divergeas.  They evaluate and determine the common ratio of a geometric series.  This four-page...
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Worksheet
Curated OER

Geometric Series 2.3

For Students 9th - 11th
Students will determine if a series of numbers are geometric, arithmetic, or neither and determine the common ratio if appropriate. In this geometric units lesson, students given a geometric series, determine the general term, and the...
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Worksheet
Curated OER

Geometric Sequences Puzzle

For Students 9th - 12th
In this geometric sequences worksheet, students solve a geometric sequence puzzle.  Students fill in the missing terms of various geometric sequences.
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Worksheet
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Curated OER

Arithmetic and Geometric Sequences

For Students 11th
In this arithmetic and geometric sequences worksheet, 11th graders solve and complete 34 various types of problems. First, they find the described term in each sequence. Then, students complete the geometric sequences and find the value...
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Worksheet
Curated OER

Geometric Mean

For Students 9th - 12th
For this geometry worksheet, students analyze a given triangle and side lengths, create an equation using the geometric mean, and finally solve the equation. There are 15 questions.
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Worksheet
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Curated OER

Arithmetic or Geometric Series

For Students 11th
In this Algebra II/Trigonometry worksheet, 11th graders evaluate arithmetic and geometric series.  The two page worksheet contains ten multiple-choice problems.  Answers provided. 
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Lesson Plan
Curated OER

Geometric Shape Cakes

For Teachers 5th - 6th
Young scholars become problem solvers and communicate geometrical ideas. In this geometrical shapes lesson, students make a cake template from geometrical shapes.
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Lesson Plan
Curated OER

Review Geometric Figures

For Teachers 9th - 10th
Youngsters review different geometric figures and shapes. In this geometry lesson, pupils use formulas to calculate area, perimeter, circumference and volume of geometric shapes. They calculate the surface area also.
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Worksheet
Curated OER

Crossword: Geometric Shapes

For Students 6th - 8th
Using a word bank, mathematicians fill out a crossword puzzle using 9 clues. Each clue describes a shape, using details such as the number of sides, angle degrees, and the shape category. For example: "A quadrilateral with four equal...
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Worksheet
Curated OER

Identify Geometric Shapes

For Students 5th - 6th
Practice identifying quadrilaterals, triangles, and closed curves with this worksheet. Given a series of shapes, learners check boxes next to each shape to indicate whether it under the correct label. Possible shape types are...
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Worksheet
Curated OER

Values of Geometrical Shapes: How Many?

For Students 3rd - 6th
Practice analyzing shapes using this shape breakdown worksheet. Your scholars examine 2 shapes and 2 figures, identifying the number of faces, vertices, edges, and sides each has. The instructions remind students that an answer of "0" is...
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Lesson Plan
Curated OER

Living in a Geometrical World

For Teachers 3rd - 5th
Learners participate in a series of hand-on, online, and multimedia activities to examine 2 dimensional and 3 dimensional shapes. They describe common geometric solids. They construct rectangular prisms using straws and ribbon.
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Worksheet
Curated OER

Arithmetic and Geometric Sequences

For Students 11th
In this arithmetic and geometric sequences learning exercise, 11th graders solve and complete 37 various types of problems. First, they determine the term of each sequence shown. Then, students find the given term number using sigma...
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Worksheet
Curated OER

Naming Geometric Shapes

For Students 5th - 8th
Name that shape! This simple activity has learners identify each geometric figure. They examine rectangular prisms, cylinders, rectangular pyramids, and hexagonal prisms. This one-page activity contains 8 problems, and the goals seems...
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Lesson Plan
Curated OER

Math Quilts

For Teachers 3rd - 6th
Learners examine geometric quilt patterns to identify how math may have been used to help slaves escape to freedom. They slide, flip and turn geometric shapes to create a map quilt.
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Lesson Plan
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Curated OER

Seeing Dots

For Teachers 9th - 12th Standards
Your algebra learners interpret algebraic expressions, in order to compare their structures, using a geometric context. They also discern how the two expressions are equivalent and represent a pattern geometrically and algebraically.
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Lesson Plan
Curated OER

CORNER CABINET

For Teachers 9th - 10th
Ninth and tenth graders calculate the length, width, height, perimeter, area, volume, surface area, angle measures or sums of angle measures of common geometric figures. They solve problems involving scale drawings, models, maps or...
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Worksheet
Curated OER

Geometric Shapes: Area and Perimeter

For Students 5th - 8th
There's a reason this worksheet is done in groups! Tricky word problems give geometry scholars a challenge as they use prior knowledge about shapes to find the area and perimeter given a few measurements. Students will enjoy discovering...
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Lesson Plan
Curated OER

Geometric Collages

For Teachers 4th
Fourth graders investigate the concept of geometric patterning. They create their own patterns with a few basic requirements. The patterns must illustrate the concepts of flipping, 90 and 180 degree rotations. The collages also consist...
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Worksheet
Curated OER

A Blast of Math

For Students 4th - 5th
In this metric measurement worksheet, students solve 20 fill in the blank questions related to metric measurement, converting metric units, area of rectangles, picture graphs, patterns, geometric shapes. Students then convert 9...
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Lesson Plan
Curated OER

Vocabulary Self-Collection Strategy

For Teachers 3rd - 5th
Dedicate one or two class periods to creating a class glossary of geometry terms. Many geometry terms also appear in our every day vocabulary, but they have very different meanings. For example, the word gross in geometry is very...

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