Unifix Mathematics Activities Book 2 By Don Balka + Problem Solving Books 2 & 3

Teaching Mathematics Through Problem Solving: Grades 6-12 by

Teaching Mathematics Through Problem Solving: Grades 6-12

Teaching Mathematics through Problem Solving Grades 6-12 NCTM SEALED

Math Stories for Problem Solving Success : Ready-To-Use Activities (grades 6-12)

Teaching Student-Centered Mathematics Grades Pre-K-2 John Van de Walle