Place Value

Units and unit relationships, base-ten structure, composing and decomposing, magnitude

4 insights

Insight 9 K-2

Linear Models vs 100s Charts

This DMT Insight compares bar models, number lines, and hundreds charts, explaining why linear models make quantities and...

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Insight 12 K-5

Building Place Value Understanding

This DMT Insight explains why naming places is not the same as understanding place value, and shows how students learn to read a...

Insight Video Newsletter
Insight 20 3-6

Rethinking Powers of Ten

This DMT Insight explains why multiplying by ten is not "adding a zero," and shows how students come to understand powers of ten...

Insight Video Newsletter
Insight 38 3-6

Building the Number Line

This DMT Insight shows how students build a number line by defining a unit, iterating it, partitioning it as needed, and...

Insight Video Newsletter