Number & Quantity

Quantity, counting, cardinality, subitizing, unitizing, composing and decomposing

2 insights

Insight 8 K-2

Foundations in Number Sense

Early mathematics education shapes students' long-term mathematical understanding and problem-solving abilities. A key component...

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Insight 19 K-2

The Five Counting Principles

This DMT Insight explains the five counting principles and shows how students coordinate number words, units, and quantity, so...

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