Lesson Plans and Creative Activities for Geometry Classroom

## Collection Contents

### Point P Where You Like

by Isaac Newton

An interesting property about area and an arbitrary point on a triangles interior is explored in this activity
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### Curriki Project Based Geometry

This collection includes resources that are used throughout the six projects of Curriki Geometry. Curriki is grateful for the tremendous support of our sponsor, AT&T Foundation. Our Team Curriki Geometry would not be possible if not for the tremendous contributions of the content contributors, editors, and reviewing team. Janet Pinto, Lead Curriculum Developer & Curriki CAO Sandy Gade, Editor Thom Markham, PBL Lead Aaron King, Geometry Consultant Welcome to Curriki Geometry, a project-based geometry course. This course offers six complete projects. All the projects are designed in a project-based learning (PBL) format. All Curriki Geometry projects have been created with several goals in mind: accessibility, customization, and student engagement—all while encouraging students toward high levels of academic achievement. In addition to specific CCSS high school geometry standards, the projects and activities are designed to address the Standards for Mathematical Practice, which describe types of expertise that mathematics educators at all levels should seek to develop in their students. How to Use Curriki Geometry Curriki Geometry has been specially created for you to use in the manner that suits your needs best. You have the option to use all the projects or only some projects in any order as supplements to your own curriculum. You can customize Curriki Geometry however works best for you. Projects Selling Geometry Designing a Winner What’s Your Angle, Pythagoras TED Talk: House of the Future The Art of Triangles How Random is My Life?
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### Snake Eyes

by Isaac Newton

An interesting problem that has students find the area of a particular section of a circle that resembles the pupil of a snake eye. The result is rather surprising, because the area does not involve pi.
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### Security Cameras

by Isaac Newton

Students use the relationship between central angles and inscribed angles in a circle to solve a problem involving the installation of security cameras in an art gallery.
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### A Cute Triangle

by Isaac Newton

A clever puzzle which has students investigate the least number of smaller acute angled triangles you can dissect a triangle into.
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### Square Peg, Round Peg

by Isaac Newton

This activity has students investigate which fits better, a square peg in a round hole or a round peg in a square hole.
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### The Truncated Square

by Isaac Newton

Students use the Pythagorean theorem to solve a tricky puzzle involving a square with four isosceles triangles cut from the corners.
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### The Right Plot

by Isaac Newton

A math problem involving the area of an irregular quadrilateral and the Pythagorean Theorem
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### Two Triangles

by Isaac Newton

Students look at two triangles and must prove whether one line is longer than another. The results are surprising, and there are many different ways to prove the answer to be true.
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### The Goat Problem

by Isaac Newton

This problem has students investigate the area of a pasture in which a goat would be able to graze.
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### The Square Problem

by Isaac Newton

A great problem that combines practice in graphing linear functions with a challenging problem involving the area of a square.
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### Pie Free Circles

by Isaac Newton

A problem involving the area of a crescent. Many students are surprised to discover that their answers do not involve pi.
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### Pie Free Circles

by Isaac Newton

A problem involving the area of a crescent. Many students are surprised to discover that their answers do not involve pi.
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### Circum Circle

by Isaac Newton

A nice problem that encourages students to think backwards. Instead of inscribing a triangle in a circle, the triangle is given, and the student must discover the diameter of the circle.
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### Pick a Shape

by Isaac Newton

Students investigate Picks Theorem, involving the area of an irregular polygon on a lattice point grid. This problem has students look for patterns, try to establish a formula, and test the formula with a more difficult case. The area of a lattice point Pterodactyl.
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### Paper Crease

by Isaac Newton

A fun geometry problem that takes a little creativity to visualize. Students investigate the length of a crease that is formed when you fold a piece of paper corner to corner.
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### Intro to coordinate geometry

by Isaac Newton

Intro lesson and worksheet to coordinate geometry
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### Proving vertical angles conjecture

by Isaac Newton

Students will use both inductive and deductive reasoning to prove the vertical angles conjecture
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### Pythagorean theorem and the distance formula

by Isaac Newton

Students use the pythagorean theorem in order to derive the distance formula. Includes pythagorean theorem practice problems
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### Finding the area of a trapezoid

by Isaac Newton

Students cut a parallellogram and then tape it to form a trapezoid. They then answer a series of questions which enable them to discover the area of a trapezoid.
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### Geometry Analysis

by Isaac Newton

Template for Analysis of Mathematics Programs/Series Mathematics Core Curriculum Mathematics Toolkit Curriculum Guidance Materials & Resources Template for Analysis of Mathematics Programs/Series
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### Interactive Math Websites

by Isaac Newton

This resource is a list sorted by subject and individual lessons that include web pages for students to obtain extra practice.
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