Curated OER
Geometry: Calculating the Area of a Circle
In this area worksheet, students use the perimeter or radius to determine the area of a circle. This one-page worksheet contains 8 problems. This worksheet may be produced in printed form. Answers may be viewed on-line.
Curated OER
Angles, Triangles, Quadrilaterals, Circles and Related
Young scholars classify angles. In this angles lesson, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Young scholars participate in a...
Curated OER
Chords of a Circle
In this geometry worksheet, 10th graders calculate the length of a chord and the distance from the center of a circle or radius. They compare diameter, chords and radius. There are 10 questions with an answer key.
Curated OER
Circle Up Your M&Ms
Fifth graders estimate how many M&Ms are in a pre-counted bag. They determine how many colored M&Ms are in a bag, then decide which of the two, bar graph or circle graph (in this case, circle graph) would be best to show te results.
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Angles in Circles
In this angles in circles worksheet, 10th graders solve 10 different problems that include tangents and chords and intersecting chords. First, they find x when given 2 intersecting chords. Then, students determine x given the diameter...
Curated OER
Circles and Parabolas
In this circles and parabolas, students write and graph equations for 14 problems. Students locate the center and radius for 8 circles. Students write equations for 4 parabolas.
Curated OER
Problem Solving Application: Using Circle Graphs
In graphing worksheet, 4th graders use the information from a circle graph about carnation sales to complete the steps of problem solving. They determine what they know, and how they can use the graph. They find how many more pink...
Curated OER
Making a Circle Graph of a Sample Budget
Students examine a sample budget and categorize the entries as a group. Then in small groups they convert budget category totals to percents and degrees to make a circle graph related to a sample budget.
Curated OER
Method for Remembering the Coordinates of the Points in the First Quadrant on the Unit Circle
In this Unit Circle worksheet, learners explore a method to help remember the coordinates of the points in the first quadrant on the unit circle. Answers are provided as well as a completed unit circle.
Curated OER
Exercise Set 4.3: Unit Circle Trigonometry
For this unit circle activity, students answer 90 short answer questions about the unit circle. Students sketch angles given a radian measure. Students find the trigonometric values of various angles on the unit circle.
Curated OER
Circle Graphs and Percents
In this circle graph and percentages activity, students fill in a chart, write percentages, calculate discounts, and more. Students complete 4 sets of problems.
Curated OER
Circles and Parabolas
In this circles and parabolas worksheet, students follow directions to draw parabolas. They fold paper to represent a parabola. Students also use straight lines to create a circle. This one page worksheet contains three multi-step...
Curated OER
Circle Problem
In this geometry worksheet, high schoolers calculate what the maximum number of regions are that 8 chords can divide a circle. They follow a pattern to arrive at their answers. There is an answer key with this question.
Curated OER
Circles and Squares
In this area worksheet, learners find the ratio of 1 area problem. Students find the ratio of areas of inscribed circles to circumscribed squares.
Curated OER
Circles:Tangents and Chords
In this circle learning exercise, students solve classic chord-chord angle problems with the angle on, in, and outside the circle as well as chord-tangent problems. There are 20 questions.
Curated OER
Circle Graphs
Fifth graders explore to find the central angle and percent. In this circle graph lesson, 5th graders use formulas to calculate the central angle and a protractor to create their graph. Students complete a graphing sheet for homework.
Mathematics Assessment Project
Sorting Equations of Circles 2
How much can you tell about a circle from its equation? This detailed lesson plan focuses on connecting equations and graphs of circles. Learners use equations to identify x- and y-intercepts, centers, and radii of circles. They also...
Curated OER
Circle of Pong
Students, in groups, use given materials to devise a way to deposit a ping-pong ball into a paper cup that is located in the middle of a 6-foot diameter circle, while standing outside the circle.
Curated OER
Unit VII Energy: WS 3a Energy Transfer and Storage
Here is a nifty worksheet on energy transfer. Physics fanatics analyze a diagram and state whether or not friction is involved. They sketch bar graphs and draw energy flow diagrams for each system as well. Circular motion, movement up...
Curated OER
Skills Practice: Area of Circles
Two practice pages with 10 problems each show circles and give their radii. Learners calculate the area. Answers are provided.
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Circles to Spheres
Students investigate circles and spheres. In this space shapes activity, students compare and contrast two-dimensional and three-dimensional shapes. Students investigate the relationship between plane and space shapes.
Curated OER
Circles
A very basic presentation on the vocabulary associated with circles has come around. Math whizzes see definitions and examples of the radius, diameter, chord, and central angle of a circle. The last slide says "practice time," but there...
Texas Instruments
Area of Circles
Students explore circles. In this algebra/geometry lesson, students discover the formula for the area of a circle, as they investigate the ratio of the area of a circle to the radius^2.
Curated OER
Altitudes and Orthocenters: Making Connections to the Nine-Point Circle
Students practice various equations for constructing nine-point circles for triangles.
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