Pattern activities can easily be implemented into the day in natural ways with children.
Child development - Wikipedia
Introducing Patterns to Toddlers & Preschoolers - Busy Toddler
Developmental Theories: Top 7 Child Development Theories
Early Child Development Stages & Characteristics
Your baby: 7 weeks old - Today's Parent
North Carolina Infant-Toddler Program (NC ITP)
Baby development: are all babies the same?
Maths & numeracy skills: babies & toddlers
Introducing Patterns to Toddlers & Preschoolers - Busy Toddler