Mobile devices have become increasingly more visible within classrooms and informal learning spaces. The purpose of this dissertation is to examine the impact of mobile learning (m-learning) tools to support student learning during teacher-led field trips. Specifically, the research questions for this study are: (a) What conditions affect student satisfaction within an m-learning environment? (b) What impact does an m-learning environment have on levels of motivation and engagement of students? and (c) How do m-learning tools facilitate student knowledge acquisition, participation, and collaboration? The hypothesis of this study is that mobile learning materials can improve students' engagement and participation. This design-based research (DBR) study relied on a combination of pre- and post-assessments, teacher interviews, and behavioral observations, in two iterations. The participants for this study included three teachers and 112 students, between 11 and 12 years old, drawn from a sixth grade public middle school in San Antonio, Texas. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]