List VOL.7 (6) NO.1 (3) NO.2 (3) 【Research Article】  Teaching Behaviors of Teachers: The Role of Moderator in Teaching Mathematical Conjecture      Author:Pei-Yu Chang Liao, Pi-Jen Lin Research Article 【中文】  Second Graders’ Concepts of Place Value Represented by Problems Involving Cuisenaire Rods, Coins, and Cherries      Author:Hsiao-Hui Tsai, Yuan Yuan Research Article 【中文】  The Effects of Gesture on Low-Ability Students’ Learning of Arithmetic and Geometry Using Worked Examples      Author:Yu-Chun Lien, Chao-Jung Wu Research Article 【中文】