# The Dot Game

The Dot Game | |
---|---|

Math - Arithmetical Operations | |

Level | Primary |

Age | 5+ |

Prerequisites | Addition With the Stamp Game Multiplication With the Stamp Game |

Materials | Dot Game Paper pencil purple or orange pencil |

This activity introduces the child to the 10,000 place value and allows the child a further level of mathematical abstraction in addition and multiplication.

Two versions of printable Dot Game Paper are available below.

## Contents

## Presentation

- Take the material to a table (could also be done on a clipboard).
- Write out an addition problem with several addends.
- Point out the units in the first number.
- Starting from the top left, put dots in the first spaces in the units section.
- Put a line through the units in the first number.
- Do the same with the tens...
- Point out the units in the second number.
- Start filling in dots in the next available units space.
- Then cross out the number.
- Fill in the dots for rest of the numbers in the same way.
- Switch to the purple pencil now.

Count to see that each row has ten dots in it. Cross off a row... - and add a purple dot to the open section below.
- Do the same with any other full rows of dots.
- Point out the dots that are left that do not make up a full row.
- Record that number in the bottom space.
- Point out the purple dots indicating the the full rows of ten units each.
- Add the same number of purple dots to the tens section.
- Cross off groups of 10 tens as was done with the units. Record the remaining tens at the bottom.
- Do the same with the hundreds...
- Move the dots from the thousands to the ten-thousands section.
- Record the number of ten-thousands in the bottom space.
- Write the answer under the original problem.

## Points of Interest

## Control of Error

Teacher subsequently the children

## Variations and Extensions

## Material

### Make Your Own

It's amazing how much some of the suppliers charge for dot game paper. I don't know about you, but I think that 66¢ for a sheet of paper that's going to be used for one math problem is a bit high. Just print your own from one of the PDFs below. You could even laminate a sheet and use it with dry erase markers.

**Printables:**

Dot Game Paper (1 per page) |
Dot Game Paper (2 per page) |

### Where to Buy

**Dry Erase Dot Game Board**

Albanesi $57.00

Alison's $20.00

Alison's $50.00

Kid Advance $14.99

Montessori Outlet $17.95

Nienhuis $38.50

Thinkamajigs $39.95

**Dot Game Paper**

Albanesi $20.00 for 30 (67¢ each)

Kid Advance $2.99 for 50 (6¢ each)

Montessori Outlet $2.95 for 50 (6¢ each)

Nienhuis $23.00 for 50 (46¢ each)

Thinkamajigs $25.95 for 30