For more ideas on math instruction in early childhood, visit the Math Play Pinterest board.
The Role of Play in Learning Math
http://earlymathlearning.com/PDFs/5TheRoleOfPlayInLearningMath.pdf
Making Math Meaningful for Young Children
http://www.naeyc.org/tyc/article/making-math-meaningful
Teaching Math to Young Children
http://files.eric.ed.gov/fulltext/ED544376.pdf
Help Your Child Develop Early Math Skills
https://www.zerotothree.org/resources/299-help-your-child-develop-early-math-skills
Loose Parts Inspired Math Play for Kindergarten
https://kidpillar.com/loose-parts-math-play/