Abstract
The aim of this study is explore the writing performance effect of a collaborative writing approach mediated by a computer-assisted collaborative learning tool for elementary school students. To increase students' interest and performances in Chinese essay writing, we facilitated co-writing peer learning programs are executed on Tablet PCs with Group Scribbles software for students' practicing themes about Taiwan with VSPOW (Vocabularies → Sentences → Paragraphs → Outlines → essay Writing) writing model. Through the peer collaborations, the pooling of rich vocabularies and corpus, and face-to-face discussions, the students' motivation and quality of writing had been enhanced.