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Unit Plan
Mathematics Vision Project

Circles: A Geometric Perspective

For Teachers 10th - 12th Standards
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
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Worksheet
Curated OER

Graphing and Properties of Circles

For Students 9th - 12th
In this circles worksheet, student solve 18 circles problems in graphing and short answer format.  Students find the equation of a circle given the center and radius and vice versa.  Students graph circles given their equation.
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Assessment
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Mathematics Assessment Project

College and Career Readiness Mathematics Test A1

For Students 9th - 12th
A six-page test covers content from several different high school math courses. It incorporates a few short answer, graphing, and word problems. It also allows room for mathematical reasoning and analysis.
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Lesson Plan
Curated OER

Discovering Pi/Welcome to Pi Day

For Teachers 9th - 12th
Students explore pi. In this circle measurement lesson plan, students define and identify radius, diameter, circumference, and perimeter. Students work in groups to measure several plastic lids and record their findings. Students compare...
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Worksheet
Curated OER

Angles and Arcs

For Students 10th
In this angles and arcs worksheet, 10th graders solve 18 various types of problems related to determine various angles and arcs of a circle. First, they find the measure of each angle and arc of the first circle shown. Then, students...
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Worksheet
Curated OER

Equations of Circles

For Students 10th
In this equations of circles activity, 10th graders solve 10 different problems that include graphing different circles. First, they convert the equations into center-radius form given the coordinates of the center of the circle and its...
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Worksheet
Curated OER

Easy Worksheet: Area and Circumference of Circles

For Students 9th - 12th
In this area and circumference of circles activity, students solve 4 graphing problems. Students graph a circle given an endpoint and center. Students find the area or circumference of the circle they graphed.
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Lesson Plan
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Curated OER

Graphing at all Levels: It's a Beautiful Thing!

For Teachers 8th - 12th Standards
Mixing math and art is done in this lesson by applying graphing knowledge to create a unique piece of art. This lesson varies acording to the graphing knowledge of the artist. First, learners identify and review various types of graphing...
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Lesson Plan
Curated OER

Equations of Circles

For Teachers 9th - 12th Standards
Using Cabri Jr. students construct a circle and determine the equation of the circle they drew by finding the center and the radius. Students use the distance formula to derive the equation of their circle.
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Lesson Plan
Curated OER

Construction Circles

For Teachers 9th - 12th Standards
Pupils investigate the number of points needed to determine a unique circle in a plane. Using Cabri Jr., they apply construction techniques to generate a circle that passes through a given number of points.
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Worksheet
Curated OER

Algebra II - Lesson 10-3: Circles

For Students 9th - 12th
In this equations of circles learning exercise, high schoolers solve 4 short answer problems. Students find an equation of a circle given the center and radius.
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Lesson Plan
Curated OER

Perpendicular Segments in a Circle

For Teachers 9th - 12th Standards
High schoolers explore the concept of circles as they construct a circle using a program such as Cabri Jr. Learners construct a chord and a diameter that are perpendicular, then measure the bisected chord and notice that both sides of...
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Lesson Plan
Curated OER

Circumscribing a Circle About a Triangle

For Teachers 9th - 12th Standards
Pupils circumscribe a circle about a triangle. They construct a triangle using Cabri Jr and then circumscribe it. They then use knowledge of perpendicular bisectors and circumcenters to locate the center of the circle and then...
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Lesson Plan
Curated OER

Let's Gather Around the Circle

For Teachers 9th - 12th Standards
Scholars explore the relationship between circumference and diameter. Groups of learners measure the diameter and circumference of round objects and record their data on a given worksheet. They then input the data into their graphing...
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Worksheet
Curated OER

Circles and Parabolas

For Students 6th - 11th
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...
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Lesson Plan
Mathematics Assessment Project

Sorting Equations of Circles 2

For Teachers 9th - 12th Standards
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...
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Lesson Plan
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EngageNY

Graphing Systems of Equations

For Students 10th - 12th Standards
Expand on learners' understanding of quadratic-linear systems. Building on the graphic understanding developed in the previous lesson, pupils learn algebraic methods of solving the systems. 
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Handout
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Curated OER

Math Handbook: Trigonometry

For Students 9th - 12th Standards
You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and formulas. 
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Handout
Curated OER

Pre-Calculus Review Sheet

For Students 10th - 12th Standards
Pre-Calculus has some detailed formulas involved and here is a great resource that lumps then all together for you. Broken up into rectangular, polar, and parametric sections, the conics all include formulas and graphs. 
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Lesson Plan
Curated OER

Stem and Leaf Plots and Circle Graphs

For Teachers 7th - 9th
Young scholars graph and plot numbers and analyze their data. In this algebra instructional activity, students identify the different properties of a stem and leaf plot. They decide which type of graph to use when it comes time to...
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Worksheet
Curated OER

Graphing Equations in Space

For Students 10th - 12th
In this equations in two/three-dimensional space learning exercise, students practice solving equations involving two/three-dimensional space configurations and finding the center and radius of spheres in twenty-six equations and two...
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Interactive
CK-12 Foundation

Tangent Graphs: Slope and Angle

For Students 10th - 12th Standards
Learning about tangents doesn't have to be a slippery slope. Pupils drag a point around a unit circle to see how angle affects the slope of a line. They individually answer a set of challenge questions to come to the conclusion that...
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Lesson Plan
Curated OER

Graphs, Stories, And Games

For Teachers 8th - 12th
In this graphs instructional activity, young scholars read stories and present story situations on a graph.  They explore distance and diameter and explain graphs.  Students create their own stories to fit graphs.
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Worksheet
Curated OER

MAP Practice

For Students 9th - 11th
In this geometry activity, students create circle, line and bar graphs using different comparisons of events. There are 24 questions with an answer key.

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