Beginning math should be hands on- working from concrete experiences, to pictorial, to the abstract as students gain a greater understanding.  Concepts are addressed in a large group setting through calendar activities, direct lessons, everyday routines, graphing, sorting, counting rhymes, etc. in relation to the theme or literature being studied, independent and small group work at centers and tubs, and one on one skills practice.

Math Tubs
Number Journals 
Recipes
100th Day

Additional Math Resources

Graphing Ideas:
Daily Math Graph - yes/no questions from CanTeach

Calendar:
Morning Meeting and Calendar- great ideas form Mrs. McDowell's website

Math and Literature:
I See Shapes - literacy and math ideas related to shapes (Inside Hubbard's Cupboard!)

Various Math Ideas:
Math Their Way - The entire text for the Math Their Way Summary Newsletter as well as the reproducible blackline masters are on-line! 
Practical Money Skills - lessons for grades Preschool - 6th