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Curated OER
Circular Reasoning
In this algebra worksheet, 11th graders convert letters to numbers given clues. Each letter will have a number value and will end up with the same total. An answer key is provided.
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The Circle's Measure
Students explore circumference and diameter. In this math instructional activity, students apply their knowledge of circumference and diameter to solve mathematical riddles. Students apply this knowledge to find circumference and...
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Relationships Among Arc and Angle Measures in Circles
High schoolers follow the directions on the attached worksheet to construct shapes using Geometer's Sketchpad. To start the lesson, it is suggested that the teacher guide the students through the initial problem. When constructions are...
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Compare Fractions Using Fraction Circles
Fourth graders practice ordering fractions using models and drawings. In this math model lesson, 4th graders utilize colored blocks and drawings to show an equal representation of given fractions. Students compare and...
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Building a House Using Circles
Young scholars study circles and problem solving. In this critical thinking lesson, students build a house using all of the circles given to them gluing them onto paper.
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Circles
Learners review the definition of a circle and the general formula for a circle to specific problems. They also write the equation for a circle given the center and radius of the circle. Students then define a circle using either the...
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Circumference and Area of Circles
In this math worksheet, students learn to calculate the area and circumference of a circle. Students answer 4 word problems after reading the information and studying the examples.
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Square Circles
Learners analyze and demonstrate how a circle can be measured in square units and examine how diameter, circumference and radius are related.
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Moving On: Octagoning the Circle
Students explore circles through the use of octagons. They inscribe a circle in a regular octagon and find the area and perimeter of the hexagon with respect to the radius of the circle. Students present their findings to the class.
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Determining the Uniqueness of a Circle
Learners use this lesson to determine how circles are different from other shapes. In groups, they determine the accuracy of three theorems based on the uniqueness of circles. They use a software program to hypothesize about the...
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Math Practice: Circles
In this circle instructional activity, learners solve 8 problems: finding percentage increase, finding differences in area and perimeter, finding circumference and area.
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Circle Terminology
In this geometry instructional activity, students identify radii, diameters, chords, tangents, secants and other terminology associated with circles. The one page instructional activity contains eighteen problems. Answers are...
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Taxicab Metric, Circle
Students create a circle using the taxi-cab metric. In this geometry lesson, students identify the properties of circles. They identify the idea of geometric shapes and how they come about.
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Lesson #151 Circles, Parabolas, and Lines
Students write equations for parabolas, circles and lines. In groups, they use computer software to play a game with circles, lines and parabolas. Students play games on the computer to find the equations for the given shape.
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Circle Halves
In this circle worksheet, students study that two semi circles make a complete circle. Students cut out the two halves of the circle and paste them together on the big circle that is shown.
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Circle Proofs
In this circle proofs worksheet, 10th graders complete 4 different problems that include circle proofs. They respond to each of the questions that deal with circle proofs. Then, students read the given information and use the circle...
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Circles
In this shape activity, students focus on the shape of a circle. Students study 8 pictures and put an x on those that have the circle shape.
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Circle Shapes
In this shape activity worksheet, students trace the circles on the tree and color them red. Students then trace the 3 large circles at the bottom of the page.
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Grape Circles
In this coloring shapes instructional activity, students trace the circles in the grapes and color them purple. Students then trace the circles and triangles at the bottom of the sheet.
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ChickaBoom ABC Circle Puzzle
In this ChickaBoom abc circle puzzles worksheet, learners view a circle puzzle for each letter of the alphabet, cut out the circle puzzle, cut the lines inside into pieces, and solve each puzzle with the same upper case and lower case...
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Geometric Shapes: Square, Rectangle, Circle, Triangle
In this math worksheet, students learn to recognize the square, rectangle, circle and triangle and discover the attributes of each. There are 15 pages available here.
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Circle the Verb
In this grammar worksheet, students circle the appropriate verb in parentheses that makes twenty-five sentences grammatically correct.
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Circle the Words From the Readings
In this reading comprehension worksheet, learners read a paragraph. They circle pictures of items that are mentioned in the readings. There are four paragraphs on this worksheet.
Florida Center for Reading Research
Phonics: Letter Recognition, Clip-A-Letter
Young scholars show what they know about the alphabet. With two circles—one surrounded by capital letters and one with lowercase—pupils use clothespins to match letters, case to case or the opposite.
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