Academic Standard

Number and Operations
Initiative: 
Tennessee Diploma Project
Set: 
Mathematics
Type: 
Standard
Code: 
2
Grade range: 
K
Conceptual StrandThe Number and Operations Standard describes deep and fundamental understanding of, and proficiency with, counting, numbers, and arithmetic, as well as an understanding of number systems and their structures.Guiding QuestionHow do students develop number sense that allows them to naturally decompose numbers, use particular numbers as referents, solve problems using the relationships among operations and knowledge about the base-ten system, estimate a reasonable result for a problem, and have a disposition to make sense of numbers, problems, and results?
 
Elements within this Standard
 
Grade Level Expectation
Count objects in a set and use numbers, including written numerals to 25.
Create, represent and recognize a set with a given number of objects.
Recognize, compare and order sets of numerals by using both cardinal and ordinal meanings.
Understand addition as putting together and subtraction as breaking apart.
Model the numbers 1 through 10 as sums or differences of different sets of whole numbers (composing and decomposing numbers).
Check For Understanding
Count objects to 25 using one-to-one correspondence and identify the quantity in the counted group.
Match quantities to 25 with numerals and written words.
Count backward from 10 to 1.
Count to 20 by twos.
Create a set with a given number of objects.
Quickly recognize the number of objects in a small set.
Recognize zero (0) as a set with no objects.
Compare sets of ten or fewer objects and identify which are equal to, more than, or less than others.
Order the numbers through 25 using numerals and words.
Recognize 6 through 10 as five and some ones.
Recognize and use ordinal numbers (e.g., first, fourth, last).
Model simple joining and separating situations with objects.
Add and subtract single-digit numbers whose total or difference is between 0 and 10.
Understand add as put together or count on and solve addition problems with sums less than 20.
Understand subtraction as break apart or take away and solve subtraction problems using numbers 1 through 10.
Model, demonstrate, and solve story problems that illustrate addition and subtraction.
Understand that numbers can be represented by different groupings.