History


Help on query formulation
Some Observations of Seventh Graders Solving Problems. Beobachtungen zum Problemloesen bei Siebtklaesslern. (English)
Arith. Teacher. (Oct 1989) v. 37(2) p. 20-21. CODEN: ARITBF [ISSN 0004-136X]
Valid XHTML 1.0 Transitional Valid CSS!