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\n\"Geometry\n\n
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\nLesson Planet Curated\n
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\nGeometry Unit 11: Circles\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nThe five resources in the Geometry Unit 11: Circles Unit Module are designed for the flipped classroom. Pupils watch videos that show how to apply concepts about circles, tangents, congruent chords and arcs, and intercepting arcs....\n
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\n\n12\nItems in Course\n\n
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\n\"Flipped\n\n
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\nLesson Planet Curated\n
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\nFlipped Math: Geometry\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nImagine taking a complete geometry course remotely! Eleven units make up the My Geometry course. Each unit follows the Flipped-Mastery cycle of learning, divided into two semesters. Pupils watch and take notes on a video that details the...\n
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Instructional Video3:54
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\n\"What\n\n
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\nCurated OER\n
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\nWhat is a Circle?\n

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\n\nFor Teachers\n\n6th - 11th\n
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\nA circle is a set of all the points that are equal distance from a center point. Learn the definition of some of the terms that are associated with a circle: diameter, radius, chord.\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video2:54
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\n\"Segments\n\n
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\nCK-12 Foundation\n
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\nSegments from Chords: Lesson\n

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\n\nFor Students\n\n9th - 11th\n\nStandards\n
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\nStrike a chord length. The section of a larger playlist on geometry introduces the relationship relating lengths of intersecting chords. Using the relationship, the video shows how to find lengths of segments of the chords.\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video3:10
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\n\"Angles\n\n
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\nCK-12 Foundation\n
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\nAngles On and Inside a Circle: Lesson\n

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\n\nFor Students\n\n9th - 11th\n\nStandards\n
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\nA video introduces methods to find the measure of angles whose vertex is on and inside a circle. Within examples, the section of a larger playlist on basic geometry incorporates several angle measurement theorems.\n
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Interactive
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\n\"Length\n\n
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\nCK-12 Foundation\n
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\nLength of a Chord: Distance Across a Ferris Wheel\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nAn interactive presents two friends on a ferris wheel with the task of finding the distance between the them. Pupils create the chord between the two friends and calculate its lengths using trigonometric ratios.\n
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\n\"Circles\n\n
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\nCurated OER\n
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\nCircles and Cylinders\n

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\nIn this geometry lesson, 10th graders break down a circle and identify the different parts. They discuss chords, diameter, radius, circumference, major and minor segment. There are 42 problems broken down into 5 different sections.\n
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\n\"Circles\n\n
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\nCurated OER\n
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\nCircles\n

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\n\nFor Students\n\n7th\n
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\nFor this circles worksheet, 7th graders identify and complete 6 different problems that include determining various parts of a circle. First, they identify and define each circle term listed on the left. Then, students color each term...\n
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\n\"Circles\n\n
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\nMt. San Antonio Collage\n
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\nCircles\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nDon't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated worksheet provides guided practice through many topics such as central angles, inscribed polygons...\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video4:59
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\n\"Chords\n\n
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\nCK-12 Foundation\n
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\nChords in Circles: Lesson\n

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\nStrike a chord with four theorems. The segment of a playlist on geometry introduces four basic theorems about chords in a circle. Theorems include the relationships between diameters and chords, congruent chords and arcs, and congruent...\n
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Instructional Video4:01
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\n\"Intersecting\n\n
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\nKrista King Math\n
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\nIntersecting Chords of Circles\n

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\nStrike a chord with your classes! Use the video to demonstrate the relationship between intersecting chords in a circle. The instructor includes an example that involves a quadratic equation and extraneous solution. \n
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Instructional Video4:14
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\n\"How\n\n
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\nHow Do You Find the Center of a Circle?\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nThe center of the circle is the center of attention for the resource. A brief video in the Socratica Geometry playlist shows how to find the center of a circle not on the coordinate plane. The method here is to construct the...\n
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Assessment8:43
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\n\"Area\n\n
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\nMathed Up!\n
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\nArea and Circumference of Circles\n

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\n\nFor Students\n\n8th - 10th\n\nStandards\n
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\nDon't go around and around, help your class determine amounts around and in a circle with a video that connects circumference to the perimeter or the distance around an object. The resource includes 14 questions dealing with circles and...\n
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\n\"Secant\n\n
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\nEngageNY\n
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\nSecant Lines; Secant Lines That Meet Inside a Circle\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nYoung mathematicians identify different cases of intersecting secant lines. They then investigate the case where secant lines meet inside a circle.\n
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Instructional Video4:16
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\n\"Parts\n\n
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\nCK-12 Foundation\n
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\nParts of Circles: Lesson\n

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\n\nFor Students\n\n6th - 10th\n
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\nStart off with the basic parts. The section of a larger playlist covering essential geometry concepts identifies and provides the definitions of the basic parts of a circles. Using drawings, the video illustrates the different parts and...\n
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\n\"Perpendicular\n\n
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\nCurated OER\n
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\nPerpendicular Segments in a Circle\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nHigh 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...\n
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\n\"Segments\n\n
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\nCurated OER\n
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\nSegments Formed by Intersectiong Chords, Secants, and Tangents\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nLearners investigate the properties of segments formed which chords, secants, and tangents, intersect. The dynamic nature of Cabri Jr. allows students to form and verify conjectures regarding segment relationships.\n
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Instructional Video1:52
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\n\"Radius,\n\n
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\nRadius, Chord, Diameter, and Secant\n

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\nWhat do a secant, chord, diameter, and radius all have in common? They are all components or measurements of a circle! This clip quickly defines each of these terms using verbal, written, and diagram examples.\n
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Instructional Video2:49
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\n\"Parts\n\n
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\nCorbett Maths\n
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\nParts of the Circle\n

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\n\nFor Students\n\n6th - 12th\n\nStandards\n
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\nBefore you can do anything with circles, you need to know the parts of the circle. Viewers of a short video see how to label relevant information about a circle. The resource covers radius, diameter, circumference, chord, tangent, arc,...\n
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\n\"Cabri\n\n
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\nCabri Jr. Perpendicular Bisector of a Chord\n

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\nYour learners will construct the perpendicular bisector of a chord. They use Cabri Jr. to construct a circle and a perpendicular bisector of a chord. They then measure lengths of the chords and perpendicular bisectors. Learners use...\n
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Worksheet
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\n\"Circles\n\n
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\nCircles\n

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\n\nFor Students\n\n10th\n
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\nIn this circles worksheet, 10th graders solve 10 different problems that include determining the chords, secants, and tangents of circles shown. First, they determine 4 different line segments given a circle with secants and chords with...\n
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\n\"Circles:Tangents\n\n
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\nCircles:Tangents and Chords\n

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\nIn this circle worksheet, 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. \n
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\n\"Chapter\n\n
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\nCurated OER\n
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\nChapter 8: Circles\n

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\n\nFor Students\n\n9th - 12th\n
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\nFor this circles worksheet, students define and sketch 20 terms about circles. Students sketch radii, chords, diameters, secants, concentric circles, etc.\n
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\n\"Circles,\n\n
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\nEngageNY\n
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\nCircles, Chords, Diameters, and Their Relationships\n

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\nA diameter is the longest chord possible, but that's not the only relationship between chords and diameters! Young geometry pupils construct perpendicular bisectors of chords to develop a conjecture about the relationships between chords...\n
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