Got this linked to the source...I think :)
Interesting blog post shares how Mrs. Gerlach organizes math instruction: B.U.I.L.D. (Buddy games, Using manipulatives, Independent work, Learning about numbers, Doing)
math centers based on B.U.I.L.D. (Kickin' it in Kindergarten)
Life of a Kindergarten Teacher
Math Daily Five B.U.I.L.D. - Buddy Games, Using Manipulatives, Independent Reading/Work, Learning about Numbers, Doing Math
Miss Van Maren's Fantastic First Grade: BUILD Math Rotations
Project based learning
My Favorite FREE 1st grade math centers! Addition Build it, Connect Four, Recycle It for place value and more! From TGIF (Thank God It's First)
2nd grade classroom: A variety of products and ideas to use with Second Graders
2D Geometry and dabbling with Inquiry based teaching - using geoboards to explore shapes and engage kids.
BUILD Math Centers
TGIF! - Thank God It's First Grade!: More Math Stations and an Addition Freebie!
Mrs. Wheeler's First Grade Tidbits: Geometry