Place Value to 20: Expanded Form 1-37

Lay the foundation for place value. Start by modeling teen numbers on ten frames. 12 is 10 counters and 2 counters – 10 ones and 2 ones – 12 ones in all. Transition to using Base 10 blocks or snap cubes to "unitize" 10 ones as 1 rod or unit. 12 is now 1 ten and 2 ones – 1 rod and 2 ones – not 12 cubes or counters.

 
 

1. Learn

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Lay the foundation for place value. Start by modeling teen numbers on ten frames. 12 is 10 counters and 2 counters – 10 ones and 2 ones – 12 ones in all. Transition to using Base 10 blocks or snap cubes to "unitize" 10 ones as 1 rod or unit. 12 is now 1 ten and 2 ones – 1 rod and 2 ones – not 12 cubes or counters.

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2. Practice

Lesson
1-37
Lesson
1-37
Lesson
1-37
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3. Apply

POD
1-37
POD
1-37
POD
1-37
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