Geometry Lesson Plans
and Work Sheets


Introductory Concepts
and Definitions

Pacing Guide for Geometry

The Right Angle -- Definitions

Scrabble Puzzle with Vocabulary

Geometric Figures -- Puzzle (Matchboxes)

Square Abouts Puzzle (Geometry Words)

Scramblegories -- Geometry Words

Symmetry Activity with the Digital Camera

How Many?

The Story of Joe Sine

The Geometrical Romance of Miss Poly Hedron

Geometry "Definitions"

Geometry Tag-A-Long

Watch Your Language! -- Geometry Words

Congruence Puzzle

Emergency Lesson Plans -- Sudoku Puzzles



Angles and Triangles

Find The Bingo -- Angles

Color the Triangles

Count the Triangles

Find The Star (Congruent Triangles)

Find The Star #2 (Congruent Triangles)

Worksheet on Congruent Triangles

The Platonic Solids



Ratio and Proportion

Similarity Project

Similar Figures Puzzle

Proportional Drawing

Ratio and Proportion Puzzle

Ratios of TV Screens

The Golden Ratio

The Golden Ratio (50 most beautiful buildings in the world)

Solving Proportions -- Silly Sally Seal



Quadrilaterals

What's My Shape?

Tangram Activity with Quadrilaterals

The Quadrilateral Family

Hidden Meaning -- Quadrilaterals

The Vertex Connection

Tangram Geometry

Perfect Squared Square

Parallelogram Game



Circles

Facts about Pi

Circle Worksheet

Droodle For Polygons, Circles, & Right Angle Trig

Angles in Circles -- Summary

Slot Car Racing (Application of Circumference)

Turvy #10 -- Geometry -- Angles in Circles

Droodle #14 -- Geometry -- Angles in Circles

Op Art (Circles)



Areas and Volumes

Droodle For Review of Area

Areas of Geometric Figures (Cut-out Activity)

Droodle For Area of Polygons

Area and Perimeter

Areas of Quadrilaterals and Triangles

Wrecked Angle -- Area

Hidden Message for Cylinders, Pyramids, and Cones

Maze for Prisms



Pythagorean Theorem

Did the Scarecrow Really Get a Brain?

The Spider and The Fly (Pythagorean Theorem)

Pythagorean Triples

Pythagorean Theorem Game

Pythagorean Triples with the same Area



Parallel Lines

Pool Table Geometry

Eratosthenes and Parallel Lines



Conditional Statements and Proofs

Conditional Statements

Conditional Statements in Advertising

Conditional Statements with Song Lyrics

Converse, Inverse, and Contrapositive

If there is righteousness in the heart

More Conditional Statements

And More Conditional Statements

Sillygisms

Direct TV Ads -- "Proofs" (words)

Direct TV Ads -- "Proofs" (videos)

Indirect Proof (Sherlock Holmes)

Truth Tables (Sherlock Holmes)


Indirect Proof (Christmas Gifts)



Graphs and Analytic Geometry

Battleship Game

Plotting Points

Slope Racing Game

Four in a Row

A Geometric Heart!

Graph Paper for Tests

Class, Take Your Seats! -- Slopes / Midpoints / Lines

Class, Take Your Seats! -- Analytic Geometry (Problem Solving)

Graphing Linear Equations (Picture)

Graphs of interior and exterior angles

Proofs with Analytic Geometry



Trig Ratios in a Right Triangle

Mnemonics for the trig ratios (SOHCAHTOA)

Legend of SOHCAHTOA

The 45 Degree Angle

The 30 Degree Angle

Trig Cut Ups

Right Triangle Trig Applications

(Turvy #7)


More Right Triangle Trig Applications



Geometrical Recreations

Holiday Math

Four Color Problem

Tangram Activities

Tessellations -- Escher Art

Tessellations -- Discovery of the 15th Pentagonal Tessellation

Optical Illusions

Stereograms

Origami

Impossible Figures

Film Posters Based on Geometry

Graph Theory and the Konigsberg Bridge Problem

Inscribing A Pentagon

The Perfect Way to Cut a Pizza



Final Exam Review

Droodle #17 -- Final Exam Review



Send any comments or questions to: David Pleacher