Free Math Help
Free Math Help: Geometric Mean
The resource explores the geometric mean. A definition, example, and formula are included.
Free Math Help
Free Math Help: Geometry Vocabulary
The lesson investigates vocabulary used in Geometry. Definitions and examples are included.
ClassFlow
Class Flow: Matchstick Puzzles
[Free Registration/Login Required] In this Flipchart, students use logic and mathematical reasoning to visually solve problems using matchsticks. Students develop their sense of pattern recognition, and pattern disruption, and then apply...
ClassFlow
Class Flow: Multilink Sequences Algebra
[Free Registration/Login Required] In this flipchart, students are presented with various shapes made up of a sequence of individual blocks. Students apply reason to predict the number of shapes needed to extend the series.
University of Cambridge
University of Cambridge: Nrich: Disappearing Square
This one page website explains how to find the area of a triangle with an interactive graphic. It then offers a challenge. The solution is available right at the website.
University of Cambridge
University of Cambridge: Nrich: Numerically Equal
The challenge for this problem is to see if you can find rectangular shapes that have the same number for their perimeter and area. Solutions are available at this one page website.
Shmoop University
Shmoop: Basic Geometry: Area of Irregular Shapes
The geometry resource investigates the area of irregular shapes. Detailed examples and practice exercises are included.
ClassFlow
Class Flow: Loci
[Free Registration/Login Required] Students learn how to apply geometric properties and relationships to describe, compare, and draw two dimensional shapes.
National Council of Teachers of Mathematics
The Math Forum: Means Proportional and Geometric Means
Dr. Math helps a student discover the meaning of the mean proportional of two numbers. Detailed explanation with examples.
University of Cambridge
University of Cambridge: Nrich: Appearing Square
The challenge presented at this one-page website offers an opportunity to work with the area of a rectangle. The solution is available right on the website.
Purple Math
Purplemath: Geometry Word Problems: Introduction
Introduces how to set up and solve simple geometric-figure word problems. Includes advice regarding formulas to memorize.
University of Regina (Canada)
University of Regina: Math Central: Mathematics Glossary: Middle Years
Basic geometric terms are defined.
Other
Pallladio: The Geometric Mean
This site details a specific problem using the geometric mean. At the bottom of the page is a summary of the geometric mean.