Share
Pin it!
Google Plus




Subscriber? Sign in to access.


 

Mysterious Subtraction

Amy F. Hillen and Tad Watanabe 

December 2013, Volume 20, Issue 5, Page 294

Abstract:
Conjecturing is central to the work of reasoning and proving. This task gives fourth and fifth graders a chance to make conjectures and prove (or disprove) them.

Keywords:
Pre-K-2
Article
Grades 3-5
Addition and Subtraction
Communication
Reasoning and Proof