Domain

Number and Operations in Base Ten

Clusters

Extend and recognize patterns in the counting sequence.

Understand place value.

Standards

NC.1.NBT.1 Count to 150, starting at any number less than 150.

NC.1.NBT.7 Read and write numerals, and represent a number of objects with a written numeral, to 100.

NC.1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones.

Materials

19 cubes or counters, blank paper, pencil

Task

Place 19 cubes on the table in a scattered arrangement.  Say:  I have a pile of cubes.  How many do you think there are?  Count and see.

After the student counts, ask: “How many cubes are in the pile?

Say: Write that number on this piece of paper.

Then, circle the digit in the ones place (9).  Say: Show me with your cubes this amount.

After the student shows the cubes, point to the digit in the tens place (1) and say:  “Show me with your cubes this amount.”

If there are still cubes left over, point to the remaining cubes and ask: “Why do you think there are still cubes leftover?”

Continuum of Understanding

Not Yet Proficient

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

q  Shows 9 cubes to represent the digit “9”

q  Shows 10 cubes to represent the digit “1”

q  Shows 1 cube to represent the digit “1”

Progressing

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

Meets Expectations

Response includes all the descriptors in “Meets Expectations”

·         Counts the collection of cubes correctly

·         Correctly writes the number

·         Correctly shows the amount of cubes in the ones place

·         Correctly shows the amount of cubes in the tens place