susan j russell andee rubin books & textbook
Landmarks in the Thousands: The Number System (Investigations in Number, Data and Space, Grade 4)
Rubin, Andee Russell, Susan J. Anderson, Catherine Cory, Beverly
Dale Seymour Pubn /1997-05T Paperback / 110 Pages
isbn-10: 1572327464 / isbn-13: 9781572327467
Different Shapes, Equal Pieces: Fractions and Area (Investigations in Number, Data, and Space)
Dale Seymour Publications /1994-10-01 Paperback / 93 Pages
isbn-10: 0866518134 / isbn-13: 9780866518130