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\n\n37\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 5: Quadrilaterals and Polygons\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nOne's knowledge of angles should measure up to expectations. Scholars watch a video to learn about angles in polygons. They first see how to partition a polygon into triangles to find the sum of the interior angle measures. They then...\n
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\n\n4\nItems in Topic\n\n
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\n\"Find\n\n
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\nLesson Planet Curated\n
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\nFind the Area of Triangles, Quadrilaterals, and Polygons (6.G.A.1)\n

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\n\nFor Teachers\n\n6th - 8th\n\nStandards\n
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\nBefore diving into the formulas for area, show where the formulas connect to the shape of the figure. The four videos look at different shapes and by decomposing them, they end up relating directly to their area formula.\n
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\n\n7\nItems in Assessment Set\n\n
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\n\"CORE\n\n
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\nLesson Planet Curated\n
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\nCORE Math Performance Assessment Modules: Grade 3\n

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\n\nFor Teachers\n\n3rd\n\nStandards\n
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\nAssess the math skills of third graders by casting them in the roles of cookie makers, data collectors, farmers, gardeners, delivery people, theatre attendees, muralists, and window washers. The CORE Math Performance Assessments in this...\n
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\n\n12\nItems in Topic\n\n
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\n\"Math\n\n
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\nLesson Planet Curated\n
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\nMath Antics Geometry Video Lessons\n

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\n\nFor Teachers\n\n4th - 8th\n\nStandards\n
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\nThe point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...\n
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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\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 Video3:58
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\n\"Triangle\n\n
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\nBrightstorm\n
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\nTriangle Angle Sum\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nDon't believe everything that you hear — make them prove it! The video shows two methods to prove the Triangle Angle Sum Theorem. The following two videos apply the theorem to finding missing angle measures.\n
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\n\"Angle\n\n
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\nEngageNY\n
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\nAngle Sum of a Triangle\n

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\n\nFor Students\n\n8th\n\nStandards\n
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\nProve the Angle Sum Theorem of a triangle using parallel line and transversal angle relationships. Pupils create a triangle from parallel lines and transversals. They find angle measures to show that the angles of a triangle must total...\n
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\n\"Angle\n\n
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\nWillow Tree\n
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\nAngle Sum Property of Triangles\n

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\n\nFor Students\n\n8th - 11th\n\nStandards\n
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\nAll triangles have some things in common. Using these properties of triangles, learners find missing angle measures. Scholars use the Angle Sum Property and properties of special triangles throughout the lesson.\n
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Instructional Video2:14
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\n\"Polygon\n\n
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\nBrightstorm\n
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\nPolygon Angle Sum\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nUsing patterns to build a formula is an important mathematical skill. Pupils discover a formula to find the sum of interior angles in a polygon by analyzing a pattern. The additional videos show how to use the formula to find various...\n
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\n\"Angle\n\n
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\nCurated OER\n
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\nAngle Sum of Triangles and Quadrilaterals\n

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\n\nFor Students\n\n9th - 12th\n
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\nIn this angle sum activity, learners find missing angles of 20 triangles and quadrilaterals.  Students find the missing angle in each polygon by using the total degrees of each and given angle measures.\n
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\n\"Lines\n\n
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\nIllustrative Mathematics\n
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\nLines of Symmetry for Quadrilaterals\n

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\n\nFor Teachers\n\n3rd - 5th\n\nStandards\n
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\nExplore how lines of symmetry help define different categories of quadrilaterals. Looking at a square, rectangle, trapezoid, and parallelogram, young mathematicians discover that each shape has its own, unique symmetry. Encourage your...\n
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\n\"Varieties\n\n
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\nCurated OER\n
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\nVarieties of Quadrilaterals\n

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\n\nFor Teachers\n\n4th - 7th\n
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\nStudents classify quadrilaterals, In this quadrilaterals lesson, students watch a video about parallelograms, discuss the different types of quadrilaterals, and complete a worksheet classifying quadrilaterals.\n
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Instructional Video1:43
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\n\"Inscribed\n\n
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\nCK-12 Foundation\n
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\nInscribed Quadrilaterals in Circles: Lesson\n

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\n\nFor Students\n\n9th - 11th\n\nStandards\n
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\nFind supplementary information about inscribed angles. A section of a large geometry playlist introduces the relationship of angles in an inscribed quadrilateral. The presentation works through examples that use the relationship between...\n
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\n\"Create,\n\n
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\nUtah Education Network (UEN)\n
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\nCreate, Classify, and Sort Quadrilaterals\n

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\n\nFor Teachers\n\n4th\n\nStandards\n
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\nQuadrilaterals can be quirky! Fourth graders use geoboards and bands to create four-sided figures. They analyze the attributes such as angle size and presence of parallel sides. As a result they learn to differentiate among...\n
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Instructional Video3:21
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\n\"Names\n\n
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\nCorbett Maths\n
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\nNames of Quadrilaterals\n

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\n\nFor Students\n\n4th - 8th\n\nStandards\n
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\nThey've all got four sides, but some have more interesting properties. Scholars learn the names of quadrilaterals. They also explore some properties of these quadrilaterals, including congruent angles, congruent and parallel sides, and...\n
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\n\"Naming\n\n
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\nCurated OER\n
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\nNaming Quadrilaterals\n

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\n\nFor Students\n\n3rd\n
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\nScholars examine six common quadrilaterals and identify each by writing its name beneath the shape. Next, they sketch four shapes: parallelogram, rectangle, rhombus, and trapezoid. Once finished, review which features helped...\n
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Unit Plan
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\n\"Quadrilaterals\n\n
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\nRadford University\n
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\nQuadrilaterals\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nConnect the quadrilaterals. Working in teams, pupils use a variety of tasks to make connections between special quadrilaterals. With the properties well defined, the groups construct quadrilaterals based on those properties. Learners...\n
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Organizer
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\n\"Quadrilaterals\n\n
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\nCurated OER\n
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\nQuadrilaterals\n

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\n\nFor Students\n\n5th - 6th\n
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\nIn this solving quadrilateral word problems worksheet, students draw figures to identify quadrilaterals, use angles to find the ones missing, and explain classification. Students solve six problems.\n
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Worksheet
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\n\"Angle\n\n
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\nCurated OER\n
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\nAngle Sum and Difference\n

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\n\nFor Students\n\n11th\n
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\nIn this angle sum and difference activity, 11th graders solve 10 different problems related to determining the angle sum and difference of numbers. First, they determine the exact value of sine and cosine degrees. Then, students utilize...\n
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\n\"Quadrilateral\n\n
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\nVirginia Department of Education \n
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\nQuadrilateral Sort\n

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\n\nFor Teachers\n\n7th\n
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\nIf only you had a Sorting Hat to sort out quadrilaterals. Learners sort cutouts of quadrilaterals based on their properties and attributes. A flowchart helps them organize the results of the activity.\n
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\n\"Exploring\n\n
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\nVirginia Department of Education \n
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\nExploring Quadrilaterals\n

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\n\nFor Teachers\n\n6th\n
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\nSort this resource into the Use pile. Scholars investigate attributes of quadrilaterals and then use the results to sort and classify the shapes labeling each figure with their properties to justify the classifications.\n
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\n\"Properties\n\n
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\nOdell Education\n
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\nProperties of Quadrilaterals\n

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\n\nFor Teachers\n\n9th - 11th\n\nStandards\n
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\nWhat type of quadrilateral is that? Discover the difference between the types of quadrilaterals. Small groups investigate types of quadrilaterals using geometry software to find their properties. To keep track of the different...\n
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Instructional Video9:50
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\n\"Quadrilaterals\n\n
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\nMath Antics\n
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\nQuadrilaterals\n

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\n\nFor Students\n\n4th - 8th\n\nStandards\n
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\nIntroduce the class to the quad in quadrilaterals. The presentation provides the names and definitions for the basic special quadrilaterals. A graphic shows the connections between the types of quadrilaterals introduced. The video points...\n
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