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Lesson Plan
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Secants, Tangents and Arcs

For Teachers 9th - 12th Standards
Students identify chords and angles. In this geometry lesson, students calculate the length of the chords inside and outside of-the circle. They differentiate between tangent and secant lines.
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Lesson Plan
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Solving a Pair of Linear Equations by Graphing

For Teachers 9th - 12th Standards
Teach your math lovers how to solve linear equations by graphing. Young scholars identify pairs of coordinates and use it to graph a line and use the TI to graph and observe the line.
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Lesson Plan
Curated OER

Angling Your Way Through a Picture

For Teachers 5th - 7th
Students look at the geometry in an artwork. In this art history/geometry instructional activity, students research the artist Charles Sheeler and look at his painting Stacks in Celebration. They find the different types of lines,...
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Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 10th graders solve 3 extensive informal geometry problems that involve triangles. First, they sketch a triangle, selecting 3 of the sides and constructing 3 midpoints. Students then draw each of 3 medians by...
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Worksheet
Curated OER

Tangents, Secants, and Chords

For Students 10th
In this tangents, secants and chords worksheet, 10th graders identify and solve 48 different problems that include using 3 different theorems for defining circles. First, they determine the area of each circle with C as the center and a...
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Worksheet
Curated OER

Why do Stars Rise in the East?

For Students 8th - 10th
In this stars rise in the east activity, learners use geometry to show how the Earth rotates from west to east and why celestial bodies appear to rise in the east and set in the west. Students draw a figure and label given points in...
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Worksheet
Curated OER

The Handley Sports Problem

For Students 11th
In this probability worksheet, 11th graders analyze how many students participate in four different sports using the probability of an event ocurring. There are 4 questions on this worksheet.
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Lesson Plan
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Special Angles on Parallel Lines

For Teachers 10th
Tenth graders investigate parallel lines and their special angles cut by a transversal. In this geometry instructional activity, 10th graders identify and find corresponding, alternate interior, and alternate exterior angles formed when...
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Curated OER

Exponential Functions

For Students 9th - 11th
In this algebra instructional activity, students evaluate exponential functions using tables and graphs. There are 6 questions with an answer key.
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Lesson Plan
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Understanding: Computing

For Teachers 6th - 8th
Middle schoolers examine how a pebble calculator works and compare it to an abacus. After a discussion on the abacus and pebble calculator and how each works, they construct their own pebble calculators. They determine how to represent...
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Lesson Plan
Curated OER

Parabolas

For Teachers 9th - 12th Standards
Learn how to evaluate the derivatives of polynomials.  Mathematicians find the derivative of a quadratic function and determine the value at a given value.  Students compare the slope of the secant line through two points with the...
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Lesson Plan
Curated OER

5 Vector Geometry

For Teachers 10th - 12th
Students imagine the way lines look. In this vector lesson, students recognize how to find a vector equation, Cartesian equation or perpendicular distance. Students find angles between planes. Students complete an activity with...
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Lesson Plan
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Sorting Polygons

For Teachers 10th
Tenth graders identify and classify polygons according to various attributes. In this sorting polygons lesson plan, 10th graders describe, classify and comprehend relationships among types of two-dimensional objects using their defining...
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Worksheet
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Solving Systems of Inequalities

For Students 9th - 11th
In this algebra worksheet, students solve systems of inequality using the graphing method. There are 5 questions with lots of examples and an answer key.
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Lesson Plan
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Solve Linear Systems of Equations: Graphing, Substitution, and Elimination

For Teachers 9th - 12th
In this system of linear equations worksheet, students solve by using graphing, substitution, and elimination. There are 44 problems.
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Worksheet
Curated OER

Regents Exam Questions G.G.21: Centroid, Orthocenter, Incenter, and Circumcenter

For Students 9th - 12th
In this triangles worksheet, students solve 4 multiple choice problems. Students find the centroid, orthocenter, incenter, and circumcenter or various triangles.
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Worksheet
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Pascal's Theorem

For Students 9th - 12th
In this Pascal's Theorem worksheet, learners prove 1 theorem. Students use GeoGebra to construct lines given three points and prove Pascal's Theorem.
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Worksheet
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Geometric Probability

For Students 10th
In this geometry worksheet, 10th graders determine the probability of an event occurring based on the geometric sketch.  The one page worksheet contains fourteen problems.  Answers are included. 
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Lesson Plan
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Compass Rose

For Teachers 6th - 10th
Students describe the movement of the Earth as it relates to the sun. They construct a permanent compass rose and use it to find directions.
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Lesson Plan
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Weather with Lewis and Clark: Then and Now

For Teachers 4th
Fourth graders discuss how to accurately measure weather, gather materials in order to make instruments, and build weather instruments in which they measure and record different aspects of weather for a five-day period.
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Lesson Plan
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Lesson Plan One: Points, Lines, Rays

For Teachers 5th
Fifth graders explore basic geometric terms. Pupils draw a physical picture of a scene that illustrates at least five geometric terms. Partners exchange drawings and locate the illustration of geometric terms in the drawing.
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Lesson Plan
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Systems of Linear Equations

For Teachers 9th - 12th
Students use the calculator to represent a situation as a table, graph, and equation. They write systems of equations and find solutions to systems of equations. In addition, they explain and justify how they determined their solutions...
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Lesson Plan
Curated OER

Systems of Linear Equations - Standard Form

For Teachers 9th - 12th
Students write systems of equations and find solutions to systems of equations. They explain how they determined their solutions to a system of equations and justify their solutions. In addition, they write equations in standard form and...
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Lesson Plan
Curated OER

Coordinate Connections

For Teachers 6th
Sixth graders complete several activities that involve coordinates and graph paper. They visualize and identify geometric shapes after applying transformations on a coordinate plane. Finally, 6th graders draw and label a coordinate...

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