{"results":"
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nCurated OER\n
\n

\nSpecial Right Triangles\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nUsing the Pythagorean Theorem to solve for missing angles, students evaluate right triangles and their properties.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Interactive
\n
\n
\n
\n\"Lengths\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nLengths of Sides in Isosceles Right Triangles: Paper Football\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nFuse sports and geometry by having your class create paper footballs—that are actually isosceles right triangles! Scholars use an interactive to create an isosceles right triangle to model a paper football. From the information in the...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Interactive
\n
\n
\n
\n\"Relationships\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nRelationships of Sides in 30-60-90 Right Triangles: Truck on a Mountain Road\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nDetermine the change in elevation on a mountain road. Individuals use the interactive to simulate a truck driving up a mountain road with a 30-degree incline. They determine missing sides of a 30-60 right triangle to find horizontal and...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Unit Plan
\n
\n
\n
\n\"Right\n\n
\n
\n
\n
\nRadford University\n
\n

\nRight Triangle Applications: Lessons 1 and 2\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nUse right triangles for more than just mathematical problems. The first two lessons of a unit ask pupils determine distances between cities by using the Pythagorean Theorem and a map. To cement understanding, learners use trigonometric...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video4:24
\n
\n
\n
\n\"What\n\n
\n
\n
\n
\nCurated OER\n
\n

\nWhat are Acute, Obtuse, and Right Triangles?\n

\n
\n\nFor Teachers\n\n5th - 8th\n
\n
\n
\nTriangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: right, isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video4:29
\n
\n
\n
\n\"How\n\n
\n
\n
\n
\nCurated OER\n
\n

\nHow Do You Find a Missing Side of a Right Triangle Using Sine?\n

\n
\n\nFor Teachers\n\n6th - 11th\n
\n
\n
\nWhat's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side divided by the hypotenuse to find sin(A). The instructor...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"You\n\n
\n
\n
\n
\nCurated OER\n
\n

\nYou Can't Go Wrong with a Right Triangle 1\n

\n
\n\nFor Teachers\n\n4th - 5th\n
\n
\n
\nFourth and fifth graders study the Pythagorean Theorem and apply it to find the missing side of a right triangle.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nCurated OER\n
\n

\nSpecial Right Triangles\n

\n
\n\nFor Teachers\n\n10th - 12th\n
\n
\n
\nIn this special right triangle worksheet, young scholars use the trigonometric functions to determine angle measurement or the length of one side of a right triangle. This one-page worksheet contains 18 problems. Answers are provided at...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Squares,\n\n
\n
\n
\n
\nCurated OER\n
\n

\nSquares, Rectangles, and Right Triangles\n

\n
\n\nFor Teachers\n\n3rd - 5th\n
\n
\n
\nYoungsters identify and draw polygons including squares, rectangles, and right triangles. In this polygons lesson plan, everyone draws these shapes that have right angles in their math journals.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nEngageNY\n
\n

\nSpecial Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nWhy are right triangles so special? Pupils begin their study of right triangles by examining similar right triangles. Verifying through proofs, scholars recognize the three similar right triangles formed by drawing the altitude. Once...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Inscribing\n\n
\n
\n
\n
\nMathematics Assessment Project\n
\n

\nInscribing and Circumscribing Right Triangles\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nHigh schoolers attempt an assessment task requiring them to find the radii of inscribed and circumscribed circles of a right triangle with given dimensions. They then evaluate provided sample responses to consider how to improve...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video3:02
\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nSpecial Right Triangle 30-60-90: Lesson\n

\n
\n\nFor Students\n\n8th - 11th\n
\n
\n
\nIt is special—given one length, you can find the other two. A segment of a basic geometry playlist provides the ratio of the lengths of sides of a 30-60 right triangle. The presentation shows how to use the ratio to find side lengths...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Investigating\n\n
\n
\n
\n
\nCurated OER\n
\n

\nInvestigating Segments in a Right Triangle\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nHigh schoolers explore the concept of right triangles as they construct a right triangle using Cabri Jr. Learners find the midpoint of the hypotenuse and construct a line from the midpoint to the vertex of the right angle. They then...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Ratios\n\n
\n
\n
\n
\nCurated OER\n
\n

\nRatios in Right Triangles\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nLearners calculate the sides of right triangles in this trigonometric ratios instructional activity. They use Cabri Jr. software and TI-83 or TI-84 calculators to find the side lengths and their ratios to each other for various...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"30-60-90\n\n
\n
\n
\n
\nCurated OER\n
\n

\n30-60-90 Right Triangles in Cabri Jr.\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nYoung mathematicians draw and label right triangles using Cabri Jr. technology. They create other special right triangles and identify the length of the hypotenuse and each leg. Students explore the ratios to determine how the hypotenuse...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video3:19
\n
\n
\n
\n\"Adjacent\n\n
\n
\n
\n
\nCurated OER\n
\n

\nAdjacent Right Triangle Problems\n

\n
\n\nFor Teachers\n\n10th - 12th\n
\n
\n
\nThe instructor identifies the terms used to solve for the angle of adjacent right triangles. He does not have an example to solve a problem.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Interactive
\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nSpecial Triangle Ratios: Special Right Triangle Ratios\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nGo from one side length to any other side length with special right triangles. Individuals use the interactive to investigate the ratio of sides in 45-45 and 30-60 right triangles. Scholars make generalizations about the types of special...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Investigating\n\n
\n
\n
\n
\nWest Contra Costa Unified School District\n
\n

\nInvestigating Special Right Triangles\n

\n
\n\nFor Teachers\n\n9th - 12th\n
\n
\n
\nScholars first investigate relationships in the side lengths of 30°-60°-90° triangles and 45°-45°-90° triangles. This knowledge then helps them solve problems later in the lesson about special right triangles.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video20:12
\n\n\n\n\n\n\n
2
\n\n\n\n\n\n\n\n2\n\n\n\n\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nFlipped Math\n
\n

\nSpecial Right Triangles I\n

\n
\n\nFor Students\n\n9th - 12th\n
\n
\n
\nIntroduce a special relationship with right triangles. Learners discover the ratio of the sides in a 30-60-90 triangle. After watching several examples and seeing two different methods, pupils find unknown sides in triangles. Scholars...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Unit Plan
\n
\n
\n
\n\"Right\n\n
\n
\n
\n
\nRadford University\n
\n

\nRight Triangle Sports\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nWho knew math could help with sports? An invigorating set of lessons encourages learners to apply right triangles in baseball, volleyball, hockey, football, and soccer. They use the Pythagorean Theorem, Pythagorean triples, special right...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video10:02
\n\n\n\n\n\n\n
2
\n\n\n\n\n\n\n\n2\n\n\n\n\n
\n
\n
\n\"Special\n\n
\n
\n
\n
\nFlipped Math\n
\n

\nSpecial Right Triangles II\n

\n
\n\nFor Students\n\n9th - 12th\n
\n
\n
\nShow students that right triangles are radical. Learners see how the lengths of the sides of a 45-45-90 triangle relate. Using that relationship, pupils observe how to find any of the lengths given one side of a triangle. They go on to...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"Identifying\n\n
\n
\n
\n
\nFuseSchool\n
\n

\nIdentifying the Sides of a Right Triangle\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nFind the right way to identify sides of right triangles. Scholars learn to correctly label the sides of a right triangle in the second video in a series of 16. The exercise is in preparation for determining trigonometric ratios.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video7:06
\n\n\n\n\n\n\n
2
\n\n\n\n\n\n\n\n2\n\n\n\n\n
\n
\n
\n\"Unit\n\n
\n
\n
\n
\nFlipped Math\n
\n

\nUnit 7 Review: Right Triangles\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nIt is all right to spend some time with a review. After watching a short review video covering the materials from the unit, pupils work through 23 review problems. Scholars work on problems involving the Pythagorean Theorem and its...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Dilations\n\n
\n
\n
\n
\nWest Contra Costa Unified School District\n
\n

\nDilations Using Right Triangles\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nDon't argue with a triangle that has a 90-degree angle. It's always right. Scholars first use right triangles to help draw dilations of points. They continue the lesson by applying this skill to draw dilations of polygons.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n","pagination":"
\n
\n
\n"}