Unit Plan
Calculator Soup

Calculator Soup: Rectangular Prism Calculator

For Students 6th - 8th Standards
This site provides an online rectangular prism calculator. Using any three of the six attributes (length, width, height, surface area, volume or diagonal), students can calculate the other three attributes. The calculator allows students...
Handout
Math Words

Math Words: Frustum of a Cone or Pyramid

For Students 9th - 10th Standards
This site defines a frustum and has links to related topics. The site offers the formula for the lateral area, volume, and total surface area of frustum of a cone.
Unit Plan
Wolfram Research

Wolfram Math World: Hemisphere

For Students 9th - 10th
MathWorld gives a simple and complex definition of a hemisphere. The formula for the volume of a hemisphere is also given.
Graphic
abcteach

Abcteach: Math Posters

For Teachers Pre-K - 1st
[Free Registration/Login Required] Most of the posters on this site are colorful math posters for primary or elementary school. However, there is one math poster that could be used in secondary school geometry class that has the formulas...
Graphic
Curated OER

Math2.org: Areas, Volumes, Surface Areas

For Students 9th - 10th
This personal site from Math2.org gives formulas for the area, volumes and surface areas of various shapes. Also provides diagrams.
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Volume and Surface Area of a Cone Frustum

For Students 9th - 10th Standards
This question and answer site deals with the derivation of the formula for the surface area for the frustum of a right circular cone.
Handout
Math Words

Math Words: Right Cone

For Students 9th - 10th Standards
Math Words defines a cone with a picture and formulas for volume given the hieght and base area of the cone.
Unit Plan
Math Is Fun

Math Is Fun: Sphere

For Students 9th - 10th Standards
Students learn about a sphere. The resource consists of facts, formulas, images, and definitions. An animation demonstrates how the sphere can contain the greatest volume for a fixed surface area.