10 books • 4 series
Developing Essential Understanding of Geometry and Measurement for Teaching Mathematics in Pre-K-Grade 2 (The Essential Understanding)
Putting Essential Understanding of Multiplication and Division into Practice in Grades 3-5 (Putting Essential Understanding into Practice)
Developing Essential Understanding of Algebraic Thinking for Teaching Mathematics in Grades 3-5 (Developing Essential Understanding)
Developing Essential Understanding of Number and Numeration in Pre-K-Grade 2 (Developing Essential Understanding)