Math - Introduction to the Decimal System
Level Primary
Age 4+
Prerequisites Cards and Counters
1 ten bar
1 hundred square
1 thousand cube
tray

This activity is the child's introduction to the Golden Bead material. This material is a concrete representation of the decimal system.

## Presentation

1. Take the tray to a table or mat. Be sure that the thousand cube is on the left and the unit bead is on the right.
2. Take out the unit bead. "This is one. We also call it a unit."
3. Take out the ten bar. "This is ten."
4. "Let's see how many unit beads there are in a ten. One, two, three..."
5. Take out the hundred square. "This is a hundred."
6. "Let's see how many tens there are in a hundred. One ten, two tens, three tens..."
7. Take out the thousand cube. "This is a thousand."
8. "Let's see how many hundreds there are in a thousand. One hundred, two hundreds, three hundreds..."
9. Lay out all of the beads and name them one more time.
10. Do a three period lesson.

## Points of Interest

• The large place values can be exciting to children.
• Seeing how heavy the thousand is.

## Control of Error

• The directress' and the child’s own knowledge

## Material

- A tray containing 1 golden bead unit, 1 golden ten-bar, 1 golden hundred square and 1 thousand cube. - A small mat for the table.

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