Jennifer Taylor-Cox
This article examines methods and types of estimation; and characterizes fruitful in-class estimation tasks by exploring the validity and possible extensions of "marble jar" estimation.
Joy Whitenack, Nancy Knipping, Sue Novinger, Gail Underwood
How a second-grade class learned to subtract effectively by packing and unpacking "Aunt Mary's candies."
Carla Moldavan
A multicultural enrichment project for fourth graders that highlights the number systems and computation algorithms of various cultures. Students' responses and reactions are discussed.