Resources

Overview of the IES practice Guides and how to potentially use them for professional development (Pt. 1)

Dr. Brad Witzel - Rational Number Aquistion (Pt. 5)

Chris Cain gives examples of even the very young students' ability to understand quantity, as well as perceptual and conceptual subitizing.

IES Problem Solving Practice Guide grades 4 to 8: Recommendation #5 (Pt.8)

Structure of the IES Guides, reliability, and where they are located (Pt.2)