Annenberg Foundation
Geometry 3D Shapes: Surface Area and Volume
Whether you wrap it or fill it, you're using geometric concepts. Classmates use an interactive approach to learn how to find volume and surface area of cylinders and prisms in the second lesson in a five-part series. The online lesson...
Annenberg Foundation
Geometry 3D Shapes: Platonic Solids
From polyhedrons to platonic solids, here is a lesson that will have your classes talking! As an introduction to platonic solids, scholars cut and fold nets to create the three-dimensional solids. They use an interactive component to...
InterLink Language Centers
Interlink Language Centers: Calculators and Converters
Conversion calculators for English language learners. Includes calculators for converting temperature, currency, measurement, time, distances, and percentages. Java is required.
Discovery Education
Discovery Education: Web Math: Math for Everyone
Provides online programs and explanations on everyday math: calculating a tip at a restaurant, determining the sale price of an item, finding the odds of winning a lottery, computing simple and compound interest, and more.
Other
Maths Zone
A huge collection of math online games for all ages. Access different types of math such as: use and apply, count and understand, addition and subtraction number facts, multiplication and division number facts, shapes, measuring, and...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Volume of an Ellipsoid
Dr. Math, in a reply to a student question, discusses how to calculate the volume of an ellipsoid.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Parabola
Dr. Math, in a reply to a student's question, explains how to find the location of the vertex and focus, calculate the distance between the focus and vertex, as well as identify the axis of symmetry and the directix.
PBS
Pbs Learning Media: Calculating Speed
In this Cyberchase video segment, the CyberSquad calculates the speed of each broom.
Other
Siyavula: Everything Maths and Science: P H
This site defines pH and provides several relevant examples and calculations.
Wyzant
Wyzant: Calculators Index
Online calculators will help you solve equations, factor, complete the square, simplify, graph, and substitute.
Environduck
Enviroduck: Carbon Footprint Calculator the Math Behind the Calculations
Learn the math on how our calculator figures your carbon footprint.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Calculating Surface Area of an Ellipsoid
Dr. Math, in a reply to a student question, discusses how to calculate the surface area of an ellipsoid.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Formula for Greatest Common Divisor.
This site is a question and response to a student asking Dr. Math about the greatest common divisor, he gives an interesting way to find the gcd, as well as the button on calculators which commonly does the math for you.
PBS
Pbs Learning Media: A Tip on Tipping
This TV 411 segment features a lesson from Question Man on how to informally calculate 15% tips at restaurants.
PBS
Pbs Learning Media: What's in That Box of Cookies, Anyway?
In this video segment from TV 411, learn how to read nutrition labels on food containers and calculate the calorie content of different serving amounts.
Other
Glenn Turner: Gyroscope Math Page
The mathematics associated with gyroscopes can be investigated through this interactive page. Users enter critical parameters about gyroscopes and rotational motion descriptors are given.
Wolfram Research
Wolfram Math World: Derangements
This MathWorld page discusses derangements, which are permutations in which no elements appear in their "natural" places. Includes helpful examples and formulas for calculating possible derangements and provides helpful examples.
National Council of Teachers of Mathematics
The Math Forum: Seventh Grade Mathematics: Cycles
Teachers can use this resource for creating interesting lessons about time and time measurement. There are articles about leap year, converting time, as well as other links for further research. An interdisciplinary project about an...
Other
Two Clocks
This clock activity is great for teaching about time problems. The first clock shows the start time, while the second clock shows the end time. The duration between the times can be automatically calculated. Either clock or the duration...
PBS
Pbs Learning Media: Calculating Rectangular Area
In this video segment from Cyberchase, the CyberSquad measures Judge Trudy's land claim by using tarps, fence posts and a grid made with rope.
PBS
Pbs Learning Media: Calculating Clones
In this video segment from Cyberchase, Inez and Lucky figure out how to keep track of the number of clones as they continue to multiply.
National Council of Teachers of Mathematics
The Math Forum: Drexel Math Forum: Distance to an Object
Dr. Math offers a way to calculate the altitude of a triangle using only the lengths of the sides of the triangle. He briefly explains how this was used by the Egyptians long ago.
Environduck
Enviroduck: Math and Chemistry Behind Co2 Per Gallon of Gas Calculations
Learn how CO2 per gallon of gas is calculated using science, math, and chemistry.
Other
Online Conversion
Conversion calculators galore! Convert just about anything from one measureable unit into another measureable unit here with over two dozen calculators. Each of the links is specific to a measureable quantity. Some examples include...
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