215
- = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( )
% < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9
( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8
9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7
8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6
7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5
6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3
People have kept count of things since the earliest times. We keep
count every day. How many books do I have? How many problems
have I done? How many goals? How many runs? How many points?
When I was younger I worked on electronic equipment and I had to
keep count of how many units I had repaired each day. I had a goal
to repair more than 80 units each day. I reached 80 several times,
but I never passed it.
People often keep count by drawing four vertical strokes and then
crossing them out with a fi fth stroke. Th at way it is easy to tally the
amount at the end by counting in fi ves: 5, 10, 15, 20, 25, etc.
= 13
Some Japanese women worked for the same electronics company
and they kept count by writing what they said was the Japanese or
Chinese symbol for 5.
K KEEPING EEPING
CCOUNTOUNT
AAppendix Eppendix E
bbapp05.indd 215app 05 .indd 215 1 1/5/07 11:36:53 AM/ 5 / 07 11 : 36 : 53 AM
- = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( )