In this Teacher's Guide to accompany How Many? , Danielson explores deep mathematical ideas such as counting, number language, units, grouping, partitioning, place value, and vocabulary. Throughout, he shares stories and excerpts from real classrooms where he facilitated How Many? discussions. Danielson helps teachers anticipate what students might notice and gives practical suggestions for facilitating rich conversations with students. Danielson's interest in students' ideas is infectious, and readers will soon find themselves seeking out opportunities to ask young mathematicians, "How Many?". Note: This Teacher's Guide is currently only available as part of the Teacher's Guide and How Many? picture book bundle.