Shu-Chen Yen's On-Line Montessori Albums

MATH DEVELOPMENT ALBUM

3.8 THE FORTY-FIVE LAYOUT (HORIZONTAL ) AND BUILDING NUMBERS


MATERIALS:

45 unit beads, tens, hundreds and thousands

One set of large numeral cards

9 containers for the units

Optional: Special paper and pencils; green, blue and red

CONTROL OF ERROR:

The exact number of beads is provided, the even progression of the pattern of the beads.

AIM:

Reinforcement of the golden bead exercises preceding this one.

POINT OF INTEREST:

The large size of the layout, building the thousands (optional).

PRESENTATION:

1. Place the unit containers (9) down the right side of the rug and set the 1-9 cards randomly.

2. Open the small box which contains 45 units. Take 1 unit and drop it into the first container at the top right of the rug as well as count "one".

3. Ask the child to find the numeral to match the number in the unit container. Place the #1 left to the unit container.

4. Continue doing the same activity until the symbol cards for 9 is reached.

5. Remind the child that we will have 10, when we reach 9 (if we have one more).

6. Obtain the ten bars box, take 1 ten bar and place it left to #1.

7. Obtain 2 ten-bars, count 1-ten, 2-ten. Ask the child to find the #20 and place it under the #10.

8. Continue doing the same activity until the symbol cards for 90 is reached.

9. Replace the ten bars container in the tray. And random the symbol 100-900.

10. Take a 100 golden beads square and place the square left to #10, ask the child to get symbol to match the quantity.

11. Place the square left to #20, count 100, then get another one hundred square and place it left to the previous square and count 200, then ask the child to find the symbols to match the quantity.

12. Continue doing the same activity until all the symbol card for 900 is reached.

13. Random the cards 1000-9000.

14. Take the golden beads 1000-cube and place it left to the 100. Ask the child to find the symbol to match the quantity. Place the symbol (1000) left to the cube.

15. Get 1000 cube, place it left to #200, count 1000, get another cube and place it left to the previous cube, count 2000, ask the child to find #2000 to match the quantity.

16. Continue doing the same activity until all the symbol cards of 9000 is reached.

17. After the layout is completed, build large number (4 place value).

NOTE:

Make sure that the child puts "0" on the place of unit.


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