Lesson Plan
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Geometry of Circles - Week 7 (Area & Circumference)

For Teachers 12th - Higher Ed
In this circle worksheet, students solve problems involving the circumference, area and arc length in a circle. They explore the union of circles and semicircles, as well as the line segments tangent to the circle. This two-page...
Worksheet
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Vertical Tower 2

For Students 11th - 12th
In this trigonometry instructional activity, students prove that for the given conditions of the problem that cos y = cos2 x.  The one page instructional activity contains one problem with the solution. 
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Conic Sections and Locii

For Teachers 9th - 11th
Students differentiate between ellipse and hyperbola. In this algebra lesson, students graph and solve elliptical equations. They use the cabri program to create the different conics and move them around.
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Investigating Pythagorean Triples

For Teachers 9th - 10th
Students investigate and solve Pythagorean triples. In this geometry lesson, students find the missing sides and angles of a right triangle. They graph right triangles and move the sides around to create different angles.
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Investigating the Pythagorean Triples

For Teachers 9th - 10th
Students investigate the Pythagorean triples. In this geometry lesson, students solve for different parts of a right triangle. They identify the missing side or angle using the pythagorean theorem.
Worksheet
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Linear Systems: Graphical Interpretation of Vectors

For Students 11th - Higher Ed
For this graphical interpretation of vectors worksheet, students execute operations of addition and multiplication by a scalar. They sketch results and determine the commutativity of vector addition. This three-page worksheet contains...
Worksheet
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Linear Systems: Graphical Interpretation of Vectors and Linear Systems

For Students Higher Ed
In this interpretation of vectors and linear systems worksheet, students describe the geometric appearance of two vectors. They add the two vectors and sketch the sum as well as the vectors to determine the commutativity of vector...
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Classifying and Measuring Angles

For Teachers 5th
Fifth graders explore the three types of angles. In this math lesson, 5th graders estimate the measure of angles and draw the angles using a protractor.
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Shapes Around Us

For Teachers 1st - 2nd
Students create posters about geometric shapes in order to demonstrate their understanding of the different shapes. Students look for pictures in magazines to represent two-dimensional shapes, paste them on a poster, label the shape,...
Worksheet
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Graphing Inequalities

For Students 9th - 10th
For this graphing inequalities worksheet, learners create graphs of algebraic expressions containing inequalities. This two-page worksheet contains explanations and examples prior to the exercise. The first page is a contains...
Worksheet
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Vertical Tower

For Students 11th
In this trigonometry activity, 11th graders are given a tower built by different angles and asked to prove the sides are true using the theorems of trig angles. There are 3 questions with an answer key.
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Side Splitter Triangles

For Teachers 8th - 11th
Students 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.
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The Dragon Curve Fractal

For Teachers 8th - 11th
Students identify the properties of a dragon curve. In this geometry lesson, students identify sequences and patterns as they solve fractals. They investigate patterns found in nature.
Lesson Plan
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Applying Proportionality in Scale Drawings

For Teachers 6th
Sixth graders examine a blue print and discuss the reasoning behind using blue prints. In this proportionality lesson,  students collaborate with their teammates to create a scale drawing. Once that is complete, 6th graders write a...
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Riemann Rectangle Errors

For Teachers 9th - 12th Standards
Students calculate the area under a curve. In this calculus lesson plan, students integrate the function to find the area under the curve. They use the Ti to create a visual of the graph.
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Geometry Concepts and Applications

For Students 10th
For this concepts and applications review worksheet, 10th graders solve and complete 40 various types of multiple choice problems. First, they write the equation of a vertical line passing through a point. Then, students find the...
Lesson Plan
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Quadrilateral Explorations-Grade Nine

For Teachers 9th
Ninth graders investigate quadrilaterals.  In this geometry lesson, 9th graders examine and classify quadrilaterals using the slope, midpoint and distance formulas.  Additionally, students create various quadrilaterals given...
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Reflections of a Linear Function

For Teachers 9th - 10th
Learners identify and reflect functions about the X-axis, Y-axis, and origin. They derive equations for reflected functions and graph the linear functions. Finally, students identify that f(x) can be reflected about each axis and the...
Lesson Plan
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Transformations and Rotations

For Teachers 9th - 12th Standards
Students define and identify transformation and rotation. For this geometry lesson, students define rotations as congruence or isometry. They find the coordinates of an image and pre-image.
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Investigating Area Using Tangrams

For Teachers 10th
Tenth graders connect the history of geometry to problem solving. In this geometry lesson, 10th graders investigate polygons through hands on manipulatives and solve problems relating to parallelograms and triangles. They calculate the...
Lesson Plan
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Preparation and Transition to Two-Column Proofs

For Teachers 10th - 11th
Students investigate proofs used to solve geometric problems. In this geometry lesson, students read about the history behind early geometry and learn how to write proofs correctly using two columns. The define terminology valuable to...
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Exploring Transformations: Translations and Reflections

For Teachers 9th - 12th Standards
Learners perform translation and reflection. They identify the coordinate points of the new graph and create a formula for the movement. They identify the pre-image the and after image.
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Translations, Reflections and Rotations

For Teachers 5th
Fifth graders use the Internet to learn about translations, reflections and rotations. Students access the Transmographer program on the Internet, where they practice what they have learned. Students also complete a worksheet.
Worksheet
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Surface Area

For Students 10th
In this geometry instructional activity, 10th graders define surface area, net and lateral face. They calculate the surface areas of cones, prisms and cubes. There are 9 surface area questions.