Numeration of the Decimal System
Exercise 4
Group Game Matching Numbers and Quantities

MATERIAL:
- 9 golden bead units
- 9 ten bars
- 9 hundred squares
- 9 thousand cubes
- A set of large number cards
- A felt lined tray
- A large green felt mat
PURPOSE:
- To combine the written symbols with the quantities.
AGE:
- 4 and 1/2 to 5 1/2 years
EXERCISE:
- A group exercise for a few children.
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- The large number cards are laid out on one table in four columns with
units on the right and thousands on the left. The golden beads are set
out in sequence on a green felt mat on another table. Only one hierarchy
at a time is used at first. The teacher puts a quantity, two hundred squares,
for example, on the tray. She shows it to the children and asks how much
it is. When the children say, "200", she asks who would like
to take the tray and put the numeral "200" by the quantity. A
child takes the tray, finds the "200" card, and puts it beside
the squares on the tray. The beads and card are replaced. The teacher makes
another quantity and the children tell her the amount she has made. A child
finds the corresponding numeral and so on.
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- The exercise can be reversed another time. The teacher can put a card
on the tray, for example "3000." The children read it and a child
fetches three thousand cubes.
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- When the children are doing the work easily, the teacher can compose
quantities using more than one hierarchy. The children tell her what she
has made and someone fetches the corresponding numeral or the teacher makes
a numeral and a child fetches the corresponding quantity.
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- The children will need to practice until they finally reach the point
where they can make any quantity or read any numeral up to 9999 without
hesitation.
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