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Grade 1
Number
3. Demonstrate an understanding of counting by indicating that the last number said identifies how many; showing that any set has only one count; using the counting on strategy; and using parts or equal groups to count sets
3.2 Ordinal numbers
Ordinal numbers
What You'll Learn
Recognize and identify ordinal numbers from first to twentieth
Understand ordinal positions as a way to describe order and sequence
Apply ordinal number vocabulary to locate items in a specific position
Distinguish between counting numbers and ordinal position words
What You'll Practice
1
Identifying objects in ordinal positions up to 10th
2
Finding items in ordinal positions up to 20th
3
Using ordinal language to describe position in a sequence
Why This Matters
Ordinal numbers help you describe order and position in everyday situations like standing in line, following directions, or organizing information. This foundational skill supports your understanding of sequences, patterns, and measurements throughout mathematics.
This Unit Includes
1 Video lesson
Practice exercises
Skills
Ordinal Numbers
Number Sense
Sequencing
Position
Counting
PEI Curriculum Aligned