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Worksheet
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\n\"Area\n\n
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\nCurated OER\n
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\nArea of Irregular Shapes\n

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\n\nFor Students\n\n10th\n
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\nIn this irregular shapes worksheet, 10th graders solve 10 different problems that include determining the area of various irregular shapes as shown in each. First, they divide each figure into familiar shapes. Then, students determine...\n
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Lesson Plan
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\n\"Area\n\n
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\nCurated OER\n
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\nArea Explorations\n

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\n\nFor Teachers\n\n7th - 8th\n
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\nStudents explore the concept of area. In this area lesson, students find the area of irregular shapes with right angles. Students break down each irregular shape into multiple regular shapes in order to find the area. Students...\n
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Lesson Plan
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\n\"Areas\n\n
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\nGovernment of Hong Kong\n
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\nAreas and Volumes - 2D Shapes\n

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\n\nFor Teachers\n\n3rd - 6th\n\nStandards\n
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\nUnfortunately for young mathematicians, the world isn't made entirely of parallelograms, triangles, and trapezoids. After first learning the area formulas for these common shapes, students apply this new knowledge to...\n
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Lesson Plan
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\n\"Footprints:\n\n
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\nCurated OER\n
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\nFootprints: Take a Step into Estimation\n

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\n\nFor Teachers\n\n3rd - 6th\n
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\nCompare sizes of student footprints with those of elephants and sauropod dinosaurs! Upper graders make estimations of the areas of irregular shapes; students use grids to make and explain estimates within low and high ranges.\n
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Instructional Video2:47
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\n\"Area\n\n
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\nKrista King Math\n
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\nArea of Rectangles Using Sums and Differences\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nUse the formula for the area of a rectangle for more than just rectangles! Scholars see that they can use common area formulas to find the area of irregular shapes. \n
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Lesson Plan
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\n\"Geometry\n\n
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\nCurated OER\n
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\nGeometry Practice: Area of Polygons #9\n

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\n\nFor Teachers\n\n9th - 11th\n
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\nIn this area of polygons worksheet, young scholars find the area of 12 polygons. Each shape is drawn on a grid. The area of each square on the grid is given. Problems are all multiple choice.\n
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Worksheet
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\n\"Math\n\n
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\nCurated OER\n
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\nMath Worksheet: Area (3)\n

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\n\nFor Students\n\n9th - 12th\n
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\nIn this area activity, students find the area of one irregular polygon.  Students find the area by dividing the irregular polygon into multiple regular polygons.\n
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Lesson Plan
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\n\"Gotcha\n\n
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\nCurated OER\n
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\nGotcha Covered, Pardner!\n

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\n\nFor Teachers\n\n4th - 6th\n
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\nYoung geometers use the interactive website Cyberchase to practice calculating both area and perimeter. Real world problems encourage learners to discover that we use math each and every day. \n
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Lesson Plan
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\n\"Awesome\n\n
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\nNational Security Agency\n
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\nAwesome Area - Geometry and Measurement\n

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\n\nFor Teachers\n\n2nd - 4th\n\nStandards\n
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\nBreak out those math manipulatives, it's time to teach about area! Capturing the engagement of young mathematicians, this three-lesson series supports children with learning how to measure the area of squares, rectangles, and other...\n
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Lesson Plan
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\n\"Does\n\n
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\nCurated OER\n
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\nDoes Sunlight Effect Leaf Size?\n

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\n\nFor Teachers\n\n4th - 6th\n
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\nStudents make estimates and then measure leaves for accuracy. They calculate the area of the leaves by drawing an outline on graph paper and counting the squares. They compare the leaves exposed to sunlight to those that are in constant...\n
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Lesson Plan
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\n\"Multiplication\n\n
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\nPennsylvania Department of Education\n
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\nMultiplication Using Arrays\n

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\n\nFor Teachers\n\n2nd - 4th\n
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\nExplore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...\n
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Lesson Plan
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\n\"The\n\n
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\nCurated OER\n
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\nThe Good, The Bad, The Ugly\n

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\n\nFor Teachers\n\n6th\n
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\nSixth graders examine the causes of the stock market crash of 1929.  In this integrated math/history unit on the stock market, 6th graders study, research, and read stocks, visit a local bank, and create a PowerPoint to show the...\n
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Lesson Plan
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\n\"\n\n
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\nCurated OER\n
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\n Exploring Areas of Irregular Polygons\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nPupils solve for the area of different polygons. In this geometry lesson, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.\n
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Lesson Plan
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\n\"Animal\n\n
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\nCurated OER\n
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\nAnimal Tracks\n

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\n\nFor Teachers\n\n4th - 5th\n
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\nYoung scholars are introduced to the topic of area. In groups, they share various techniques to help them identify different shapes and work together to calculate the area. They use this same knowledge to determine the area of animal...\n
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Lesson Plan
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\n\"Perimeter\n\n
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\nCurated OER\n
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\nPerimeter\n

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\n\nFor Teachers\n\n3rd - 7th\n
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\nYoung scholars explore the concept of perimeter. In this perimeter lesson, students discuss how to find perimeter of various shapes. Young scholars use the Perimeter Explorer applet to find the perimeter of various shapes.\n
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Lesson Plan
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\n\"Area\n\n
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\nCurated OER\n
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\nArea Explorations\n

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\n\nFor Teachers\n\n4th - 5th\n
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\nStudents explore the area of rectangles. They practice finding area by playing an onliine computer activity where they calculate the area of a rectangle to solve a problem.\n
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Lesson Plan
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\n\"Exploring\n\n
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\nCurated OER\n
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\nExploring Areas\n

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\n\nFor Teachers\n\n5th\n
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\nFifth graders use the activities provided on a web site to calculate the area of an object.\n
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Unit Plan
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\n\"Shmoop:\n\n
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\nShmoop University\n
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\nShmoop: Basic Geometry: Area of Irregular Shapes\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nThe geometry resource investigates the area of irregular shapes. Detailed examples and practice exercises are included.\n
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Interactive
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\n\"Shodor\n\n
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\nShodor Education Foundation\n
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\nShodor Interactivate: Lesson: Area Explorations\n

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\n\nFor Teachers\n\n3rd - 5th\n\nStandards\n
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\nIn this lesson students will practice finding the area of irregular shapes with right angles and understand that there are different methods for calculating area.\n
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Activity
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\nTexas Instruments: Give Me a Hand or Leaf Me Alone\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nIn this activity, students' find the surface area of geometric shapes cut from card paper and relate it to its mass. They use this data to find the surface area of irregularly shaped objects.\n
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Interactive
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\n\"Shodor\n\n
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\nShodor Education Foundation\n
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\nShodor Interactivate: Area (Elementary)\n

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\n\nFor Teachers\n\n2nd - 5th\n\nStandards\n
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\nIn this lesson students will practice finding the area of rectangular shapes and irregular shapes with right angles and understand why the area formula works for rectangular shapes. CCSS.Math.Content.3.MD.C.5.b A plane figure which can...\n
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Activity
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\n\"Learn\n\n
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\nGovernment of Alberta\n
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\nLearn Alberta: Math Interactives: Exploring Composite Figures\n

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\n\nFor Students\n\n6th - 8th\n
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\nInvestigate how a variety of shapes can be used to form composite figures using this interactive Learn Alberta math resource. Students will also work on using relevant operations and formulas to figure out the total area of composite...\n
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Interactive
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\n\"Mangahigh:\n\n
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\nMangahigh: Shape: Estimate the Area of Shapes\n

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\n\nFor Students\n\n6th - 9th\n\nStandards\n
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\nTest your knowledge of determing the area of irregular shapes.\n
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Unit Plan
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\n\"Algebra2go:\n\n
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\nSaddleback College\n
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\nAlgebra2go: Finding Area Problem Sets\n

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\n\nFor Students\n\n9th - 10th\n
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\nThis resource has three sets of problems. Each set has six questions for finding area of irregular shapes formed by line segments. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem....\n
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