13 august 2013
What are numbers used for?
What are numbers used for?
ü Ordinal numbers – tell the order of things in a set—first,
second, third, etc. Ordinal numbers do not show quantity. They only show rank or position.
§ In relation to time (e.g. 2nd
child in the family)
§ In relation to space (e.g. 2nd
from the finishing line)
ü Nominal number - a telephone number, a player on a team. Nominal numbers do
not show quantity or rank. They are used only to identify something.
ü Cardinal number - tells "how many." Cardinal numbers show quantity.
ü Measurement – Standard Index unit (SI
unit)
There are
many ways to find the sum of numbers.
One of the
ways is by using ten frames.
Advantages
of using 10 frames for children are:
·
Visual
·
Concrete
·
Number
bonds
·
Number
conservation
·
One-to-one
correspondence
·
Cultivate
place values (ones in relation to 10)
Take-away
for today:
v Things with different nouns cannot be
added or subtracted
v If a task has constraints, there are
opportunities to problem solve.
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