Me and my friend llove to solve math puzzles...but we r currently in dearth of problems! Any help?

Maths Tricks, HOW TO find squares in seconds. GRE CAT APTITUDE, GMAT SPEED MATHEMATICS

by
nconsul

How to Add

by
arylic

The Scientific method? It has its failings, how can we make it better?

by
gaiatechnician

Introduction: Analyzing a Crystal Filter

by
mr electro

Symmetrical Party Hat

by
Childrens Museum of Houston

How to Convert a Value to the Desired Units

by
wrb993

William Jones' Pi Pie (mathematically infused)

by
w3-m4k3-stuff

Arduino in the Classroom - a Simple Experiment in Measuring and Modeling Water Pollution

by
john_pelesko

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http://www.math.utah.edu/~cherk/puzzles.html

http://www.mathsisfun.com/puzzles/index.html