Primary Standards:
MAFS.K.CC.1.1 Count to 100 by ones and by tens.
MAFS.K.CC.1.2 Count forward beginning from a given number within the known sequence (instead of having to begin at 1).
Connecting Standards:
MAFS.K.CC.1.3 Read and write numerals from 0 to 20. Represent a number of objects with a written numeral 0 – 20(with 0 representing a count of no objects).
Content Knowledge:
This Unit should occur around the 100th day of school. Students should have been counting each day of school, as recommended in the Building Community Unit. The 100th day of school will then be a culminating experience where students see the completion of number patterns occurring at 100, as well as noticing the 10 full ten-frames and/or 10 full bundles of tens.
One aspect of counting is the knowledge of the counting sequence, students must be able to say the number names, in order, without skipping any numbers. This will be integral to not only counting objects, but also with advanced strategies of counting on and counting back within operations.
While students must memorize the sequence of numbers from 1-20, they begin to see patterns that allow them to extend their counting beyond 20, without sole reliance on memory. These patterns help kindergartners master the counting sequence to 100.
Students also are expected to count on from any given number (1-100). Patterns in our number system assist students with this skill. The hundred chart (made of tens strips) is a helpful resource to recognize this number sequence, especially as students count through the problematic counting sequence of “teen” numbers and across decades (19-20, 39-40, etc.) Additionally, kindergartners practice counting to 100 by tens. This early skip-counting gives students a foundation understanding of our base-ten system.
GCG 1 – Learning Goal: As a Mathematician, I will be able to rote count to 100 by ones
- Step 1: Students can sequentially count to 100 by ones
- Step 2: Students can recognize patterns that make the counting sequence
- Step 3: Students can rote count from any number (other than one)
- Step 4: Students match the number name with the numeral
GCG 2 – Learning Goal: As a Mathematician, I will be able to skip count to 100 by tens