Nov 202012
 
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ACTIVITY:

Montessori Dynamic Subtraction with the Golden Beads

MATERIALS: image[5][3][3][3]

A bank of Golden Beads

A set of large number cards

Three sets of small number cards

A felt lined tray for each child

3 tables – one for the beads (bank)

one for the cards

One floor mat

OBJECTIVES:

To teach the child about subtraction in the concrete form.

To teach the child the term “subtraction”.

To show the child how to change when doing subtraction.

CONTROL OF ERROR:

NA

AGE: 4 – 6 years approx.
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  • However, the child finds that there are not enough units to take away from and so he is required to go to the bank and to exchange a ten-bead bar for 10 single units.
  • When the units are replaced on the operations mat, the child sees that there are now enough units to take away from.
  • He places 4 unit beads on his tray.
  • He does the same with the tens, hundreds and thousands, changing at the bank when necessary.
  • The small number cards are removed from the tray and placed below the large number cards.
  • The tray is placed to one side.
  • The Montessori Directress then explains that if we count the beads left on the mat we will have the answer to the subtraction sum.
  • The child counts, starting with the units, then tens, 100’s and 1000’s.
  • The child collects and places the corresponding small number cards below the beads at every stage.
  • The Montessori Directress re-states the sum. She also says that we did “subtraction” – that is, we started with a big amount and now we only have a small amount of beads left.
  • End the work cycle.
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