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Y

ETL123 week 9

Place value concepts

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Y Counting and bundling

• By ones

• By bundles (tens, hundreds, …)

• From any number, on and back

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Y Naming and renamingWriting and rewriting

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Y Structuring

100102

10101

1100

0.110-1

0.0110-2

÷ 10 ÷ 10 ÷ 10 ÷ 10

× 10× 10 × 10 × 10

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Y Models for place value

• Building models– Popsticks– Unifix cubes– Counters and containers– Graph paper

• Fixed models– LABs– MABs– Money