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Lesson Plan
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The Overlooked Regular Pentagon

For Teachers 10th
Tenth graders discuss the history of geometry as it relates to pentagons. In this geometry lesson, 10th graders solve problems of a pentagon inscribed inside of a circle using ratio. They review other properties for shapes of polygons...
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Worksheet
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Determine the Measure of an Angle of a Right Triangle.

For Students 10th - 11th
In this geometry worksheet, students solve word problems by finding the values of missing angles and missing sides of triangles. They review their trigonometric properties of a right triangle. There are 9 problems with an answer key.
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Worksheet
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Four Estimating the Area of Small Objects Problems

For Students 5th - 8th
In this estimating area worksheet, students work with their families to draw four small objects found around their house and estimate the area of each object. 
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Lesson Planet Article
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Mystify with the Mathematics of Ancient Egypt

For Teachers 3rd - 6th
Hieroglyphics, surveying, and the pyramids may all be explored with mathematics.
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Lesson Plan
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This Building is Tall

For Teachers 9th - 12th
Students calculate the perimeter of shapes. In this geometry lesson, students relate properties of polygons to the real world. They find length, midpoint and slope.
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Lesson Plan
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Trigonometric Expressions and Identities

For Teachers Higher Ed
In this college level Pre-calculus worksheet, students use the trigonometric identities to factor and simplify trigonometric expressions.  Students use algebra to prove various trigonometric identities.   The three page worksheet...
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Worksheet
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Hyperbolas

For Students 8th - 11th
In this algebra worksheet, students identify the graphs of hyperbolas. They find the center and directrix. There are 10 questions.
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Worksheet
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Chapter 6: Geometry Perimeter and Area

For Students 10th - 12th
In this perimeter and area learning exercise, students find the perimeter of various polygons.  They compute the perimeter, surface area, circumference, and volume of given figures.  Students explore trigonometric ratios.  This...
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Lesson Plan
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Law of Cosines

For Teachers 7th - 9th
Students model scenarios using functions and their properties. In this trigonometry lesson, students calculate the angles of sine, cosine and tangent. They perform operation using a calculator.
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Lesson Plan
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Charting a New Course

For Teachers 9th - 11th
Young scholars calculate the distance they will travel. In this geometry lesson, students use the TI and CBL system to make calculation of a certain path. They explore geography by calculating distances between different areas as it...
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Lesson Plan
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Plenty of Pythagoras

For Teachers 5th - 8th
Using a twelve foot knotted rope, learners form a 3-4-5 right triangle. Following a discussion of observations about the lengths of the sides of the triangle, students use grid paper, scissors and a centimeter ruler to draw and measure...
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Lesson Plan
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Geometry Review

For Teachers 7th
Seventh graders explore basic geometric definitions involving angles, area, and circumference. To reinforce basic geometric concepts, they play a "lightning Flash" card game. Students discuss chores or jobs that require the use of...
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Worksheet
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The Math of Science-Squares and Square Roots

For Students 7th - 9th
For this squares and square roots worksheet, students practice finding the squares of numbers and the square roots of numbers given word problems.
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Worksheet
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Black Holes... What's inside IX

For Students 11th - Higher Ed
In this space science activity, students solve 7 problems related to black hole space and time. They answer questions related to the spacetime dimension.
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Worksheet
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Mathematical Wackie Wordies

For Students 9th
In this word worksheet, 9th graders examine pictures and write a mathematical phrase to describe the picture.  This one-page worksheet contains 25 problems.  Answers are provided.
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Lesson Plan
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Right Triangles and The Unit Circle

For Teachers 8th - 10th
Learners solve right triangles using trigonometry. In this geometry lesson plan, students use the unit circle to identify different trig values. They identify the six trigonometric identities.
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Lesson Plan
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How are Trig Ratios Used to Measure Triangle Sides

For Teachers 8th - 11th
Students identify the ratios of trig identities. In this geometry lesson, students solve the missing sides and angles of triangles using trig ratios. They relate the graphs and waves to real life scenarios.
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Lesson Plan
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Translating Transformations in Geometry

For Teachers 9th - 12th
Students create an image using given coordinates and evaluate how the coordinates change when a slide or rotation takes place.
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Lesson Plan
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Finding Patterns in Fractals

For Teachers 7th - 8th
Students discover patterns and sequences. They use a website to explore patterns and fractals. Students share their discovery of fractals and their patterns with the class. They develop a list of patterns used in everyday life.
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Lesson Plan
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Visual Patterns in Tessellations

For Teachers 3rd - 12th
Young scholars explore tessellations as well as various types of polygon. Students examine tessellating patterns in the world around them. Young scholars examine tessellations by creating their own tessellations and completing the...
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Lesson Plan
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Geometry in Tessellations

For Teachers 3rd - 12th
Students examine tessellations and their geometric properties. Students explore the concept of tessellations and lines, planes, angles, and polygons. Students experiment with the area and perimeter of polygons. Students analyze...
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Lesson Plan
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Translations, Reflections, and Rotations

For Teachers 9th - 12th
Students are introduced to the concepts of translation, reflection, and rotation. They practice translating, reflecting, and rotating two-dimensional objects on the coordinate plane. students use computers to learn about the three concepts.
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Lesson Plan
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An Introduction to Quadrilaterals

For Teachers 6th - 10th
Students explore different types of quadrilaterals. Students define the terminology used with quadrilaterals. They create particular quadrilaterals based on specific characteristics of the quadrilaterals using an online tool.
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Lesson Plan
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Tilted Squares and Right Triangles

For Teachers 5th - 6th
Students investigate squares. They generate patterns from structured situations and find a rule for the general term and express it using words and symbols. Students generate patterns from a rule and substitute values and formulas.

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