Subtraction Memorization Charts

PRESENTATION OF THE MATERIAL:

There are two boards for memorization and one control board (without frames).

THE FIRST MEMORIZATION BOARD:

• 1 chart with the results of all the combinations
• 1 tray containing a basket with the combinations, paper and a pencil

THE SECOND MEMORIZATION BOARD:

• the same chart as the first board but without the results
• 1 tray on which there is a green box with the "-" sign written on it, containing the answer tiles for the results of all the combinations; the tiles are white with the results in green.

PRESENTATION:

1. With the first board

1. fetch the material with the child
2. sit down with the child at a table
3. tell them the name of the activity
4. have them draw a slip of paper from the basket and invite them to write the combination on the paper
5. show them how to find the result on the board at the intersection of the two numbers of the combination
6. once found, write it on the sheet then draw a new combination
7. continue until they have done them all.

2. With the second board (blank)

1. fetch the second board with the child
2. sit down at a table
3. open the box and take out all the tiles: stack them by family (the 1s with the 1s, the 2s with the 2s, the 3s with the 3s, etc.)
4. have the child draw a slip of paper
5. invite them to pick the result from among the tiles and place it on the board, at the intersection of the two numbers.