ICANyons Parent Toolkit for Kindergarten Mathematics
Numbers and Operations and Base Ten: I CAN...
Standard
Make or break apart numbers from 1119 into tens and ones

Core Standard
K.NBT 1 Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18=10+8); understand that these numbers are composed of ten ones, and one, two, three, four, five, six, seven, eight, or nine ones.

In Other Words
The child makes or breaks apart numbers from 1119 into tens and ones. For example: 18 can be broken into 1 group of 10 and 8 ones.

If Mastered
Once child can effectively work with composing and decomposing numbers
from 1119 into ten ones and some further ones  using objects, then
have child work on writing it in an equation.
For example, give child 18 black beans. Using a TenFrame have the child put one bean in each spot. They will see they have a group of 10 and 8 more. Then they can write the addition sentence to match the beans, 10 + 8 = 18. 
If Not Yet Mastered
Math Activities  Click Here K.NBT1 *Dots and Numeral Cards (1120) *Cubes on the Ten Frame *Teens on the Ten Frame *Teens on Ten Frame, books 1 and 2 *Tens and Ones with Unifix Cubes 