Curriculum Library

Numbers in Base 10 Unit 3: Understand Place Value

Key Concept: When comparing two-digit quantities one compares tens to tens, ones to ones, and compares the tens place value first.

Lesson Sequences

T.3-1-3 Compare Quantities to 99  |
View Teacher-Facilitated Lesson Students use the phrases more than, fewer than, and equal to in order to compare groups of objects to 99. (35-45 min)
T.3-1-4 Compare Quantities to 99 with Symbols  |
View Teacher-Facilitated Lesson Students use greater than, less than, and equal to symbols to compare groups of objects to 99.  (35-45 min)
T.3-1-5 Compare Quantities to 99: How Many More  |
View Teacher-Facilitated Lesson Students compare quantities and determine how much larger or smaller one group is than the other.  (35-45 min)
T.3-1-6 Compare Numerals to 99: Make a Model  |
View Teacher-Facilitated Lesson Students build upon their understanding of comparing groups of objects to 99 in order to use models to compare numerals to 99. (35-45 min)
T.3-1-7 Compare Numerals to 99  |
View Teacher-Facilitated Lesson Students apply their understanding of place value to compare numerals to 99.  (35-45 min)
Key Concept: 1 ten is equivalent to 10 ones.

Lesson Sequences

This topic is still in development.

Key Concept: 1 ten is equivalent to 10 ones.

Lesson Sequences

This topic is still in development.