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\n\n26\nItems in Unit\n\n
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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\n29\nItems in Unit\n\n
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\n\"Geometry\n\n
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\nGeometry Unit 9: Area of Polygons\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nSix lessons make up the Geometry Unit 9: Area of Polygons unit module. Pupils review the formulas for finding the area of parallelograms and triangles. They apply previous learning of trigonometric ratios and the Pythagorean Theorem to...\n
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\n\n34\nItems in Assessment Set\n\n
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\n\"Balanced\n\n
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\nLesson Planet Curated\n
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\nBalanced Assessment: Basic High School Packet\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nSeventeen short assessments are designed to test scholars’ knowledge of basic Algebra 1 concepts. Pupils determine the houses that are a given maximum distance from a school, complete charts to show equivalent scale factors, and...\n
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\n\n38\nItems in Assessment Set\n\n
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\n\"Balanced\n\n
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\nLesson Planet Curated\n
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\nBalanced Assessment: Advanced High School Math Packet\n

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\n\nFor Teachers\n\n11th - 12th\n\nStandards\n
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\nNineteen resources make up the Balanced Assessment: Advanced High School Math Packet designed to test learners' knowledge in Algebra II, Geometry, and Pre-Calculus classes. To demonstrate their understanding of concepts related to these...\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 Video5:55
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\n\"Inscribed\n\n
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\nCK-12 Foundation\n
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\nInscribed Angles in Circles: Lesson\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nCircle the angles and intercept the arcs. The video introduces three theorems relating to inscribed angles in circles. Using drawings, the segment of a playlist on geometry illustrates the measure of angle along with theorems about two...\n
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Instructional Video2:33
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\n\"Angles\n\n
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\nCK-12 Foundation\n
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\nAngles Outside a Circle: Lesson\n

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\n\nFor Students\n\n6th - 12th\n\nStandards\n
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\nUnderstand the difference in finding angle measures. A segment of an extensive geometry playlist introduces the formula to find the measure of an angle formed outside of a circle. Using examples, the video shows how to calculate measures...\n
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\n\"Arc\n\n
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\nArc Length and Areas of Sectors\n

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\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
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\nHow do you find arc lengths and areas of sectors of circles? Young mathematicians investigate the relationship between the radius, central angle, and length of intercepted arc. They then learn how to determine the area of sectors of...\n
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Instructional Video3:15
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\n\"Arcs\n\n
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\nCK-12 Foundation\n
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\nArcs in Circles: Lesson\n

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\n\nFor Students\n\n6th - 11th\n\nStandards\n
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\nTaking a major look at arcs is not minor. A segment of an extensive playlist on geometry introduces the concept of an arc in a circle. The resource demonstrates how to find the measure of an arc and defines special types of arcs.\n
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Instructional Video8:36
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\n\"Inscribed\n\n
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\nKrista King Math\n
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\nInscribed Angles of Circles\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nRelationships in circles build from the many connections made throughout the geometry course. The instructor in the video explains these connections as she builds the concept of inscribed angles. Using examples, the narrator highlights...\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\"Conversion\n\n
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\nCK-12 Foundation\n
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\nConversion between Degrees and Radians: Arc and Radians Relationship\n

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\n\nFor Students\n\n10th - 12th\n\nStandards\n
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\nHow are arc lengths and radians related? An interactive resource demonstrates the relationship as pupils create arc lengths in a unit circle and compare them to the angle measurements. Questions ask individuals to build upon this...\n
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Instructional Video21:05
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\n\"Circles\n\n
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\nCircles and Arc Lengths\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nDiscuss all things round and round. Pupils review finding area and the circumference of circles and use them to solve problems. Next, they learn about central angles and their relationships to measures of arcs. Learners then find out how...\n
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\n\"Shot\n\n
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\nCurated OER\n
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\nShot Put Arc\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nStudents complete Part A: Dissecting a Circle. They generate their own chords within the circle. Students measure the various parts of the arc in the shot put pit. The first two measurements, the chord and distance from the midpoint of...\n
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Assessment
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\n\"Area\n\n
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\nMathed Up!\n
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\nArea of Sector and Length of Arcs\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nViewers learn how to apply proportional reasoning to find area of sectors and arc lengths with a video that starts off explaining how to find the areas of circle sectors and the lengths of arcs. Scholars then practice solving problems...\n
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Activity
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\n\"Suitcase\n\n
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\n101 Questions\n
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\nSuitcase Circle\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nAnalyze patterns in a circular arrangement. After using a geometric construction to complete a circle, learners use proportional reasoning to make predictions. By determining the length of an arc built from suitcases, they estimate the...\n
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Worksheet
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\n\"Angles\n\n
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\nCurated OER\n
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\nAngles in Circles\n

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\nIn 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...\n
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Instructional Video12:15
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\n\"Intersecting\n\n
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\nKrista King Math\n
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\nIntersecting Secants and Tangents with the Vertex On, Inside, and Outside the Circle\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nPrepare classes for the many segment and angle relationships within circles. The video lesson examines the relationship between secants, tangents, angles, and arcs. The instructor works through examples to demonstrate the relationships.\n
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Lesson Plan
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\n\"Arc\n\n
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\nOdell Education\n
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\nArc Length and Area of a Sector\n

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\n\nFor Teachers\n\n9th - 11th\n\nStandards\n
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\nWhat do skateboarding and baked goods have in common with math? You can use them to connect half-pipe ramps and cakes to arcs and sectors. Pupils compare the lengths of three different ramp options of a skate park. They calculate the...\n
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Lesson Plan
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\n\"Similar\n\n
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\nEngageNY\n
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\nSimilar Triangles in Circle-Secant (or Circle-Secant-Tangent) Diagrams\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nFirst angle measures, now segment lengths. High schoolers first measure segments formed by secants that intersect interior to a circle, secants that intersect exterior to a circle, and a secant and a tangent that intersect exterior to a...\n
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Lesson Plan
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\n\"The\n\n
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\nEngageNY\n
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\nThe Angle Measure of an Arc\n

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\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
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\nHow do you find the measure of an arc? Learners first review relationships between central and inscribed angles. They then investigate the relationship between these angles and their intercepted arcs to extend the Inscribed Angle Theorem...\n
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Instructional Video6:50
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\n\"Degree\n\n
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\nDegree Measure of an Arc\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nCircular patterns and movement are commonplace in our world. Young mathematicians begin their study of circles with instruction on finding the degree measure of both major and minor arcs. Examples focus on the arc in relation to the...\n
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Instructional Video6:10
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\n\"Arc\n\n
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\nArc Length\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nDon't let your classes feel like they are going in circles. The video lesson shows pupils how to apply a formula to finding the length of an arc defined along a circle. The instructor uses three different examples to illustrate 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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