CREATIVE PROBLEM SOLVING in School Mathematics 2nd Edition by Dr. George Lenchner.
Teaching Problem-Solving? This textbook for teachers can help you. It uses about 400 challenging nonroutine problems to extend elementary and middle school mathematics into such topics as sequences, series, principles of divisibility, geometric configurations, and logic. It is the foundation of our program and is based upon the author’s popular inservice course, The Art of Problem-Solving.
The book is organized into 7 sections: (A) Teaching Problem Solving; (B) Some Problem Solving Strategies; (C) Some Topics in Problem Solving; (D & E) Solutions to Parts A,B, and C; (F & G) Appendices and Index.