Card Tower or Bridge

Build a tower or bridge from playing cards. Make a table showing the number of cards needed to make each sized bridge or tower.

Can you predict how many cards will be needed for the 100th size? The nth size?

 Bridge Size Number of cards 1 2 3 4 5 100 n 5 8 11

Solutions to these puzzles are available to those who have a Transum Subscription and are signed in.

You can try similar activities which are online and interactive:
Matchstick Patterns - Seating Arrangements - Sequences and Series

 Do you have any wonderful ideas for using playing cards to help learn mathematics? Please share your ideas here. Playing cards have been around since the ninth century. They were invented in China and spread across Europe in the fourteenth century. Though the designs on the cards have changed over the years the basic number properties have not. Because they are so popular the manufacture of high quality cards is not expensive and makes them an ideal tool for learning mathematics.

Activities with numbered cards:

Prime Pairs Game

A game for two players who take turns to select two numbers that add up to a prime number.

Transum.org/go/?to=ppg

Superior

A game for two players who compete to make the largest possible number from randomly selected cards.

Transum.org/go/?to=superior

Manifest

An exciting and thought-provoking number placing game for two players or one player versus the computer.

Transum.org/go/?to=manifest

Nevertheless

Players decide where to place the cards to make an equation with the largest possible solution.

Transum.org/go/?to=nevertheless

Fifteen

A strategy game. Play against the computer to select three numbers that add up to 15.

Transum.org/go/?to=fifteen

Square Pairs Game

A game for two players who take turns to select two numbers that add up to a square number.