Order at Creative Services: https://aeacreativeservices.org/product-category/browse-catalog-items/educational-resources/math-essential-elements-conventional/
Number Sense Routines from Calvert County
Math for the CVI Student Youtube playlist
Roots of Math Assessment Resources for pre-emergent learners
The Erikson Institute Early Math Collaborative Precursor Concepts
Outdoor Lesson Ideas from the UK (designed for GE, so pick a lower set)
Early Childhood Math Routines by Antonia Cameron
Very Special Maths by Les Staves