McGraw-Hill Education (COR)
(10)
University of Chicago School Mathematics Project (EDT)
(4)
Max Bell/ Jean Bell/ John Bretzlauf/ Amy Dillard/ James Flanders
(3)
Max Bell/ Jean Bell/ John Bretzlauf/ Amy Dillard/ Robert Hartfield
(3)
Elaine (Friars Primary School Bennett UK),Jenny (Earls Hall Infant School Weidner UK)
(2)
Elaine Bennett and Jenny Weidner
(2)
Evan M. Glazer/ John W. McConnell
(2)
Max Bell/ John Bretzlauf/ Amy Dillard/ Robert Hartfield/ Andy Isaacs
(2)
Molly Blaisdell/ Francesca Carabelli (ILT)
(2)