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Tangents to a Circle

For Teachers 9th - 10th
Students construct tangent lines. In this geometry activity, students identify the point of tangency, secant and tangent lines. They graph the lines on the Ti and make observations.
Lesson Plan
Curated OER

Measuring the Earth

For Teachers 10th - 11th
Students identify types of arcs and angles in a circle, find the measure of arcs and angles, and solve real world problems involving lengths of segments in circles, lengths, and areas.
Lesson Plan
Curated OER

Conjectures For Intersecting Circles

For Teachers 9th - 10th
Students identify properties of circles. In this geometry lesson plan, students identify the center of two intersecting circles.They use Cabri software to create circles and move it around to make observation.
Lesson Plan
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Reflection

For Teachers 8th
Eighth graders use a stencil to make a figure with which they discover the horizontal line of reflection, the vertical line of reflection, and the diagaonal line of reflection using coordinates.
Lesson Plan
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Geometry of Triangles - Week 6

For Teachers 12th - Higher Ed
In this geometry of triangles worksheet, students find the length of sides, are, and angle measurement of inscribed triangles, pentagons, and midpoint of a line. This two-page worksheet contains seven problems.
Lesson Plan
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Making Topographic Maps and Mountain Profiles

For Teachers 7th - 11th
Students study how to mark inclines and construct a mountain profile.  In this topographic map lesson students mark contour intervals and draw mountain profiles. 
Lesson Plan
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Shortenin' Bread Shuffle

For Teachers 5th - 12th
Students learn a line dance that corresponds with the recreational dance curriculum of North Carolina. They respond to directional cues and terms in folk an line dancing.
Lesson Plan
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Chors, Secants, Tangents

For Teachers 9th - 12th
Students identify the relationship between chords, secants and circles. In this geometry lesson, students calculate the length of the chords. They sketch the secant lines on a circle.
Lesson Plan
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Mapping The Iditarod

For Teachers 4th
Fourth graders watch a video about mapping distances and then calculate the distance their individual mushers travel each day. This occurs each Monday through Friday until each musher has crossed the finish line in Nome Alaska.
Lesson Plan
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Geometric Construction

For Teachers 7th
Seventh graders investigate some concepts associated with geometric shapes. They study the bisector segment and the perpendicular line to a given line. Students conduct analysis with the goal of deepening observation and deduction...
Worksheet
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Worksheet 27 - Fall 1995

For Students 11th - Higher Ed
In this math worksheet, learners find the area bounded by the tangent line, the x-axis, and the line x =2. They also describe the graph of the function.
Lesson Plan
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Side Splitter Triangles

For Teachers 8th - 11th
Learners investigate the side splitter theorem. In this geometry lesson, students estimate and solve problems dealing with ratios and proportions. They identify angles created by lines that are parallel.
Lesson Plan
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Constructing Perpendiculars

For Teachers 9th - 10th
Learners construct perpendicular lines. For this geometry lesson, students use a compass and straight edge to do construction. They start from a point to a line.
Lesson Plan
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Quilt Geometry

For Teachers 7th
Seventh graders explore lines of symmetry, congruent polygons and patterns. They listen to "The Seasons Sewn," observe a PowerPoint presentation, and identify congruent polygons and visual patterns. Through an internet activity, 7th...
Lesson Plan
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The Trig To Soccer

For Teachers 9th - 12th
Students are given the background information to open the lesson plan: Suppose a penalty kicker in soccer could choose where he could kick from, as long as he stayed on the back line of the penalty area. Would he have a better chance of...
Lesson Plan
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Due Process: Is It Always Due?

For Teachers 9th - 12th
Students explore the basic Constitutional protections of due process and then consider the balance of these basic protections with issues of national security. A variety of segments of U.S. Supreme Court cases are examined in this...
Lesson Plan
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Vocabulary from The Outsiders

For Teachers 7th - 9th
Students listen to audio tape of segment of novel, The Outsiders, practice using online dictionary to look up and define vocabulary words, and create list of terms in Microsoft Word document.
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Aborigine Dot Turtles

For Teachers 1st
First graders create Aboriginal Dot Turtles using wax colors or crayons. The class discusses Aboriginal stories and art as a way to practice design. This lesson can be done in two 30-minute lesson segments.
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Circle Packing

For Teachers 9th - 10th
Students identify different parts and properties of circles. In this geometry lesson, students identify the radius, diameter, semicircle and inscribed angle of a circle. They identify the tangent lines to a circle.
Lesson Plan
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Leaping Lemurs! How far can you jump?

For Teachers 3rd - 6th
Students watch a segment of the PBS video which show the lemurs' ability to jump. In pairs, students collect measurement data involving each other's length of a standard step, a standing broad jump, and a long jump. They record their...
Lesson Plan
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Larva and Adult Antlion Body Parts

For Teachers K - 2nd
Learners identify the major body segments of antlions. Through the use of diagram worksheets, students label the various body parts of the antlion. They review the life cycle of antlions from the larva stage to adult. Several activities...
Lesson Plan
Utah Education Network (UEN)

Integers on a Coordinate Plane

For Teachers 4th - 6th
Boogie fever! Explore the concept of integers on coordinate plane. In this integers on a coordinate plane instructional activity, students graph rational numbers on the coordinate plane and identify coordinates of a point. Students...
Lesson Plan
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Power of a Point

For Teachers 9th - 11th
Pupils solve problems by finding the radius or diameter. In this geometry lesson, students identify the tangent line of a circle and use properties of circles to find the radius. They relate circles to the real world.
Interactive
ReadMagazine

William Shakespeare

For Students 9th - 12th
Is this an interactive resource I see before me? Fret not. Here's a resource filled with sound, and a bit of fury, sure to engage learners in a study of Shakespeare's Scottish play. User can view an interview with Shakespeare, examine...

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