Domain

Number and Operations in Base Ten

Cluster

Understanding place value.

Standard

NC.1.NBT.3 Compare two two-digit numbers based on the value of the tens and ones digits, recording the results of comparisons with the symbols >,=,<.

Materials

SF, unifix cubes or connecting cubes, pencil

Task

Provide materials to the student.  Read the problem to the student:  Katherine has 23 markers.  Matthew has 32 markers.  Compare their numbers of markers using pictures and/or words.

Circle who has more markers?      Katherine        OR          Matthew

Explain how you know.

Continuum of Understanding

Not Yet Proficient

Response includes 0-1 of the descriptors in “Meets Expectations”

Strategies Used:

q  Represented both numbers with cubes or pictures

q  Represented both numbers with words

q  Correctly compared the numbers

q  Used a number line to compare.

q  Other:

Progressing

Response includes 2-3 of the descriptors in “Meets Expectations”

Meets Expectations

Response includes all of the descriptors in “Meets Expectations”

• Accurately represents the number 23   

• Accurately represents the number 32

• Correctly circles who has more:  Matthew

• Clearly explains why 32 is more by referencing the amounts of tens in each number