What this lesson teaches
Quantity comparison.
Can you finish more or less game in about 20 min?
You will quantity comparison.
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Quantity comparison.
Subitising — instantly recognising quantity without counting — develops through repeated exposure to grouped objects. The 'more or less' comparison directly builds number sense, which predicts arithmetic ability better than any rote drill.
1. Put 3 objects on one plate. 2. Put 5 on other. 3. Which is more? 4. Make them equal.