## Additions to the Math Page (11/2007 - 12/2007)

On the Puzzles page:Two javascript programs about determining the date of Easter

New data to the cost of gifts listed in the 12 Days of Christmas song

On the Problem of the Month page:

Several Problems of the Month

On the Math Poetry page:

Poem about the Klein bottle and Mobius Strip

On the Math Games page:

The Game of NIM

The Dividing Piles game

SOLOMON's game

The game of Nine Men's Morris

The game of Nim with cards

The game of Fifty

The Squares Game

On the Math Tricks page:

Calendar trick #1

An interactive version of Calendar trick #1

Calendar trick #2

An interactive version of Calendar trick #2

The Digit Struck Out trick

An interactive version of the Digit Struck Out trick

An interactive version of MacArthur's Favorite Number Trick

The Mobius Strip activity

A Psychological trick

A number trick

An overhead projector trick

The interactive version of the overhead projector trick

An age trick

The interactive version of the age trick

The 99 trick

The 999 trick

The brothers, sisters, grandparents trick

The Pepper Problem

The Cow Problem

The Quick Addition trick

The Fibonacci Addition trick

The Perfect Fith Power trick

The Squaring a Number Ending in Five trick

The Dime and Penny trick

The Nines Tables trick

The Base 2 trick

Another version of MacArthur's Favorite Number Trick

The 1979 trick

The Roman Numeral trick

The Domino trick

An interactive version of the Domino trick

A Card trick

An interactive version of the Card trick

The Dollar Bill Folding trick

The Lucky Numbers trick

The Printing Press Number trick

The Six Numbers trick

Twenty Objects Trick

Interactive version of the Twenty Objects Trick

Guess a birthday trick

Interactive version of Guess a birthday trick

Favorite Class trick

Repeat Yourself trick

Division trick

some number tricks

Subtraction trick

Interactive version of the Subtraction trick

The 17 trick

Addition trick

Addition trick with Negative Numbers

Card trick with 13 cards of one suit

Card Trick with Aces and Faces

Card Trick with 21 cards

Card Spelling Trick

Card Trick where you cut the deck into 5 piles

3 Piles Card Trick

Guess the Month Trick

the Dictionary Trick

Walk through a hole in the paper Trick