Animal See-Saw is a game for two players.

Each player is given 12 animals.

Players take it in turns to place an animal on their side of the see-saw - making sure that their side of the see-saw is never more than 5 kg heavier than the other side.

The winner is the player who survives the game without ever being more than 5kg heavier than his/her opponent.

If a player does become 5kg heavier than their opponent, the see saw falls, they lose and the game is over.

If both players make it to the end of the game, the winner is the one with the most weight on his/her side.

http://www.counton.org/games/animal-see-saw/index.html

This Geogebra file shows dynamically how the graphs of the sine, cosine and tangent functions change as the parameters in their equations are changed. Thanks to Greg Bland for sharing this very visual activity.

Geogebra is a powerful FREE dynamic geometry program. You can download it from
http://geogebra.org

This is a very cool Geogebra file that shows the vectors involved in projectile motion. Thanks to Greg Bland for sharing this file. Three thumbs up!

You can download the FREE dynamic geometry program Geogebra from
http://geogebra.org

This zip file contains two Geogebra files that dynamically illustrate vector concepts - one that shows the forces on an object on an inclined plane and one that shows the resultant of three forces acting at a point. Thanks to Greg Bland for sharing these. Both are excellent teaching aids - 3 thumbs up!

Geogebra is a fantastic FREE dynamic geometry program that can be downloaded from
http://geogebra.org

This Geogebra file kindly submitted by Greg Bland dramatically illustrates that the derivative of a cubic function is a quadratic function. Sliders allow you to change the parameters of the cubic function.

Geogebra is a fantastic FREEE dynamic geometry program available from
http://geogebra.org

A collection of four Geogebra files from Greg Bland that will help students understand conics.

Geogebra is a fantastic FREE dynamic geometry program that can be downloaded from
http://geogebra.org

Geogebra is a comprehensive FREE dynamic geometry program that can also be used to teach coordinate geometry and calculus.

http://www.geogebra.org/cms/

This Word document is a beginner's guide to Geogebra. Geogebra is a free dynamic geometry program available in both Windows and Mac format from
http://www.geogebra.org/cms/

This document gives a brief introduction to Geogebra in the context of circle geometry.
Thanks to David Crewe for sharing.

Bill Newell has kindly shared some Google Sketch-up files on volume and cross-sections that he has created.

Google Sketch-up is a free 3-D drafting and geometry tool that can be downloaded from:
http://sketchup.google.com/

The files have been zipped, so you will need to unzip them before you can your them.

Your task: Answer the question below. Then download and open the attached Excel spreadsheet. The number of legs is the password to unlock the Excel sheet. Add your name to the spreadsheet and send it on to see who else can unlock it.

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Note: This is not a trick question. This is a real math problem so don't say that a bus has no legs. Also, there is no driver on the bus, so don't add any legs for a driver.

There are 7 girls in a bus
Each girl has 7 backpacks
In each backpack, there are 7 big cats For every big cat there are 7 little cats

Question: How many legs are there in the bus?