9 1 50 Lower Elementary 6-9 (Copy) Dale Gausman Primary Author mixed material United States North American Montessori Center (NAMC) 2007 WhatsApp_Image_2026-07-06_at_10.13.14_AM.jpeg.jpeg Lower Elementary 6-9 (Copy) Dale Gausman Primary Author mixed material United States North American Montessori Center (NAMC) WhatsApp_Image_2026-07-06_at_10.13.15_AM_%282%29.jpeg.jpeg Dale Gausman Additional Author mixed material Hoboken, NJ NAMC 2006 WhatsApp_Image_2026-07-06_at_10.13.15_AM.jpeg.jpeg Lower Elementary 6-9 (Copy) Dale Gausman Primary Author mixed material United States North American Montessori Center (NAMC) WhatsApp_Image_2026-07-06_at_10.00.30_AM.jpeg.jpeg Lower Elementary 6-9 (Copy) Dale Gausman Primary Author mixed material United States North American Montessori Center (NAMC) WhatsApp_Image_2026-07-06_at_9.50.45_AM.jpeg.jpeg Lower Elementary 6-9 (Copy) North American Montessori Center (NAMC) Primary Author mixed material United States North American Montessori Center (NAMC) WhatsApp_Image_2026-07-06_at_9.24.49_AM.jpeg.jpeg Dale Gausman Additional Author NAMC Primary Author mixed material Hoboken, NJ PT. Mandiri Jaya Abadi 2006 cover_math-2-lower-elementary-6-9-20240619133454.jpg Lower Elementary 6-9 Dale Gausman Additional Author NAMC Primary Author mixed material Hoboken, NJ Innovative Kids 2006 cover_math-1-lower-elementary-6-9-20240619133349.jpeg Dale Gausman Additional Author mixed material Hoboken, NJ PT. Mandiri Jaya Abadi 2006