Methods: Montessori
Natural Structure
Dr. and Mrs. Walsh who are Catholic homeschool parents of three children and Third Order Carmelites (and have many years of teaching experience between them) have outlined a Catholic homeschool curriculum using Maria Montessori's philosophies to guide the teaching methods and Dorothy Sayers' essay "The Lost Tools of Learning" to direct the content (subjects covered, materials used, etc.).
Montessori on a Limited Budget
This is a more advanced and thorough version of Teaching Montessori in the Home. The book contains a very good introduction to the Montessori philosophy of education, but from a secular point of view. It includes much more detailed descriptions of the different activities. It also includes instructions for making nicer materials, but more skill, time and money is required than the materials outlined in Teaching Montessori in the Home.
Teaching Montessori in the Home
This book is filled with simple Montessori learning activities and techniques for young children (2 - 5 yrs. or so). Included are instructions for making the materials very simply and inexpensively. For example we made some very nice picture cards by cutting photographs out of magazines, catalogs, etc. I attached them to index cards with contact paper.