|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon US||3 days ago||59.18||$49.86||You save $9.32|
|Book Depository US||yesterday||54.9||$49.86||You save $5.04|
Judy Harris Helm heads her own educational consulting and training company, Best Practices, Inc., in Brimfield, Illinois, USA. Lilian G. Katz is past president of the National Association for the Education of Young Children (NAEYC) and professor emerita at the University of Illinois, USA.