# Dominoes – How Dominoes Are Used in the Classroom

Domino’s is a company that listens to its customers. They use feedback to make changes in their stores and deliver pizzas faster.

The word domino, also spelled dominoes, originally referred to a long hooded cloak worn together with a mask at a masquerade. It later referred to the playing piece.

## Rules

There are many games that can be played with domino. The rules of the different games may differ slightly but they are all based on the same principles. Players should shuffle the tiles face down before each game and thoroughly mix them by moving them with their hands. The player who draws the hand for that game should be the one to do this shuffling.

The first player plays a tile, positioning it so that the end matches an exposed end of another domino, i.e. a one’s touch a two’s or a six’s touch a four. This creates a chain of dominoes and the number of points shown on each end is counted.

If a player can’t play they must pass. If no one can go then the game is blocked and that round is over. Players then count the value of the pips on the dominoes they still have in their hands and the player with the lowest value wins that round.

## Materials

Dominoes can be used in a variety of ways in the classroom. They can be used to practice addition and subtraction, or to help students learn about the commutative property of addition. They can also be used to help students understand how sound waves travel through materials.

The materials used to make dominoes are varied. The majority are made of plastic, although some sets are made of wood. The maker community for dominoes is vast and it is possible to find a set of dominoes made from almost any material.

A domino is a flat, thumbsized rectangular block with a face divided into two parts, each bearing from one to six spots or dots resembling those on dice. A complete set of dominoes consists of 28 such blocks. Dominoes are often painted in bright colors to identify the number side. The opposite side is blank or decorated with a design. Dominoes are used in many games to create lines or angular patterns.

## Variations

Dominoes are normally a square, with a line down the center to visually divide them into two ends having zero to six dots (called spots or pips). A domino can have one of three values: a number, blank, or double.

The rules of different domino games differ slightly but there are some fundamentals that apply to most. Generally, a domino is played so that it touches a previous tile. This develops a chain of tiles that gradually increases in length. The initial tile is often a double because it can be played on all sides and helps to limit your opponents possible plays. Doubles can also be used as spinners in some games like Chicken Foot, Matador, or Bendomino.

When a player draws a domino that they cannot play, they must either begin their train with the next tile drawn from the bone pile or pass. This is called blocking the game. If a player blocks the game and no one can make another move, the game is over.

## Scoring

Dominos can be played with a variety of scoring systems. Generally, each domino has two unmatched ends with one end being bigger (having more pips) than the other. The difference between the two ends is arrived at by subtracting the smaller end from the bigger end: for example, a 3-6 domino has a difference of three (six minus three).

Each round of play begins with the player holding the highest double. The winner of each round is awarded points based on the value of the dominoes left in the other players’ hands rounded to the nearest multiple of five. The first player to an agreed upon number of points, usually 150, wins the game.

In the 1977 Frost/Nixon interviews, Richard Nixon defended his destabilization of Salvador Allende’s Communist Chile and Cuba by arguing that it would cause a domino effect in Latin America and lead to a communist red sandwich entrapping the United States. This argument is known as domino theory.