## Counting the Chains of 100 and 1,000

MATERIAL:

- 1 gold unit bead
- 1 ten bar
- 1 chain made by linking 10 ten bars together
- 1 chain made by linking 10 hundred chains together
- A green floor mat

- Small number cards, one for every tenth bead,
for use when counting the chains of 100 and 1000. The tens are
written in blue, the hundreds in red, and the thousands in green.
The cards on which two numerals are written could be one and one half
inches. The cards on which three numerals are written could be two
inches. The cards on which four numerals are written could be two
and one half inches. The ends of the cards on the right would be
pointed.

PURPOSE:

- To give children an understanding of the relative value of 1, 10,
100, and 1000 in linear form

- Optional practice in counting

EXERCISE:

- The mat is spread on the floor. The unit, the ten bar, the
hundred and thousand chains are laid out parallel to each other.
The thousand chain is far too long for the mat and extends right down
the classroom. Its length is most impressive. The children
gain an understanding of the relative value of the quantities.
Most children enjoy counting when they first realize their ability to
do so. These children will want to count the chains. They
may like to have the small number cards to place against every tenth
bead of the hundred chain and the thousand chain. If a child does
not wish to use the number cards when counting the chains, he or she
does not need to do so.