of Andrea and Jesús, I also had two good friends to set a high standard for me to try to follow.I'm still trying to catch up! I also want to extend my deep appreciation to the teachers and students who participated in this research intervention. They went along with my ideas and requests with an admirable amount of grace and flexibility. I thoroughly enjoyed the time that I spent working with them, and if I can do nothing else to repay them, I am happy to at least make their words, their opinions, and their personalities live on here.I am indebted to Heather Phipps, who so kindly agreed to collaborate with me in the planning and teaching of the lessons in this intervention. I most definitely got the better end of our bargain. Not only did her enthusiasm for using picture books in language arts classes convert me, but she essentially trained me in the process of creating engaging lessons for young students based on these books. I learned a great deal from my collaboration with her.It is difficult to articulate the impact that Roy Lyster has had on my academic career. If it were not for him, I am not sure that I would have chosen to study second language education as a ii MA student, and I am certain that I would not have pursued a doctoral degree. Throughout both of my degrees, his support has carried me through many rough patches, and I am immensely appreciative of the opportunities that he has opened to me. I have the deepest respect for his professionalism, and I am happy to be his friend.The years in which I have worked on this degree have been extremely rich in large part because I was simultaneously in the process of building my family. This simply would not have been possible without the help of Serge Dubois, who supported this goal of mine from the beginning, and who still supports it. I am also happy to extend my thanks to my children, Bella and Jude Dubois. It is not uncomplicated to have two children while working and studying.However, you both kept my priorities in check, and your smiles, hugs, and playfulness were a welcome respite when academia became overwhelming. I only hope that I can make you proud of me in repayment for the many times that I had to work when I would have rather been playing with you.To my parents, Sid and Gail Ballinger, thank you for always being there for me, no matter how far apart we were. To my grandmother, Nellie Thompson, I am now quite pleased to finally answer your question with confidence: "No, Grandmother. I do not plan to be a professional student." I love you guys. iii ABSTRACT This dissertation is based on a 7-week classroom intervention in two French immersion classes (Grades 3and 3/4) in two schools that enroll both English-and French-dominant students near Montreal, Quebec. The intervention aimed to bridge the students' first and second languages (L2) through a 'biliteracy' project that linked English and French language arts content and through the instruction of reciprocal language learning strategies designed to help