1.NBT.A.1 - About the Math, Learning Targets, and Increasing Rigor

Grade 1 Number Concepts

1.NBT.A.1

Full Standard

Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

a. Count to 120 orally, starting at any number less than 120.

b. Read numerals up to 120.

c. Write numerals up to 120.

d. Represent a number of objects up to 120 with a written numeral.

 

Measurement Topic

This standard is reported on the report card in these quarters as follows:

1st Grade Students Learning 1st Grade Standards
Quarter 1 Quarter 2 Quarter 3 Quarter 4

Report Card Measurement Topic: Demonstrates understanding number concepts and relationships

Report Card Measurement Topic: Demonstrates understanding number concepts and relationships

 
Kindergarten Students Learning 1st Grade Standards
Quarter 1 Quarter 2 Quarter 3 Quarter 4

 

Report Card Measurement Topic: Demonstrates understanding counting principles

 

 

About the Math

Skills and concepts below are learning goals for this standard.

Counting is a fundamental skill of mathematics. Students should be provided with lots of opportunities throughout the day to practice counting.

  • Count to 120.
  • Count to 120 starting at any number.

Objects of all kinds should be counted. To develop concepts of number, have students estimate how many of something before counting. For example, before getting crayons have students estimate how many crayons are in the box. After estimating, partners should count to find a total. When students are first estimating, ask them if the amount is more than ten or less than ten, or more than 20 less than 20, etc. This helps them begin to get a sense of quantity. As students become proficient forward counters, they should begin to count backward. This understanding helps develop an understanding of how numbers relate and soon will be foundations for comparing numbers. The standard can be naturally extended by having students begin to skip-count by simple intervals including 2, 5, and 10. The latter (skip-counting by 10) connects with 1.NBT.C.5

 

Hundred charts and number lines are useful tools for developing our students' ability to count. Keep in mind that successful counting on one representation does not necessarily translate to other situations, contexts, or tools. Students who are proficient in counters can count and represent their counting in many ways. It is also important to note that counting, especially one-to-one counting, becomes comfortable for students who then rely on it for addition and subtraction. Though this is a reasonable early strategy, we should move students to more efficient modes of counting once one-to-one is proficient. 

  • Read any number up to 120.
  • Write any number up to 120.
  • Label a set of objects up to 120 with the written numeral.

As students develop counting skills, it is only natural to have them read and write numbers. Students might reverse the image of a 6. However, they might also reverse place values writing 61 as 16. The latter is a considerable problem. Use of charts and other tools to support understanding of the formation and look of multi-digit place value numbers is critical. Be sure to connect physical representations (or drawings), with number charts, and the numbers generated by the students themselves. 

 

As students become efficient one-to-one counters, it is wise to move them to count by groups or decompositions of numbers. For example, when counting up 16 from 49, they may count 1 to 50, 10 to 60, and then 5 more to 65. Keep in mind that this is not required by the standard however it is a useful and important extension of student understanding. More importantly, it is critical to moving students to more efficient ways of counting, adding, and so on as soon as they master a lower level strategy.

Interactive 100s Chart             Number Line (Whole Numbers)

 

Progression of Standard within Grade 1

This progression informs how to develop the standard within the grade level. This progression is provided by HCPSS Elementary Mathematics.

Progression Throughout Year
Quarter 1 Quarter 2 Quarter 3 Quarter 4
  • Count to 120.
  • Count to 120 starting at any number.
  • Read any number up to 120.
  • Write any number up to 120.
  • Label a set of objects up to 120 with the written numeral.
  • Count to 120.
  • Count to 120 starting at any number.
  • Read any number up to 120.
  • Write any number up to 120.
  • Label a set of objects up to 120 with the written numeral.
**Revisit this standard during the year through routines, independent practice, discussions, and other activities. **Revisit this standard during the year through routines, independent practice, discussions, and other activities.

 

Progression of this Standard Across Grades

This progression is informed by the Achieve the Core Coherence Map Links to an external site.. Information is not the complete standard.

Progression Across Grades
Kindergarten Grade 2
  • Count to 100 by ones and by tens (K.CC.1)
  • Understanding of place value and bundling. ( 2.NBT.1 )

 

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