Day 2: Whole Numbers - Rational Counting

Problem 5: How many going to St. Ives?

My take away for this problem is that this video is not rational counting as we cannot count things that have different nouns. For example,

UNLESS

 we count count it with a common name like 'fruits'

Rational Counting

Subitize

Now, can you subitize all the pictures in this clip?

Why some children cannot count?

1. Unable to classify

2. unable to rote count

3. inability to understand counting in one-to-one correspondence

4. does not appreciate that the last number uttered represents the size of set.

5. no conceptualize idea in rational counting

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