Research shows TGT Cooperative Learning fosters interpersonal relations that motivate higher academic achievement regardless of learners’ abilities and aptitudes. TGT stands for Teams Games Tournaments. A mid-2019 study quantified the net effects of an online Team Challenge vocabulary tournament among 4,001 first-year EFL students in 123 classes at six universities. All students used the same self-study vocabulary app over the same time period. 2,001 students participated in a Team Challenge tournament and 2,000 did not. Pre and post tests show students on teams learned and retained an average 48% more words than students studying alone. As one teacher wrote, “My students learn thousands of words with the app but the Team Challenge transformed the experience from self study to a team effort where students pull together and motivate each other.” Details about the study approach; methods, outcomes, and opportunities for teachers are outlined in this report. Teachers will learn how to organize teams of learners to participate in free Team Challenge vocabulary tournament. Students who participate can be expected to learn from 1,000 to 3,000 new words during a tournament. Teachers can use the information in this report to conduct their own cooperative learning tournaments with any educational apps that are capable of supporting such an event. Few EFL teaching professionals are familiar with TGT Cooperative Learning and therefore further studies about team-based cooperative learning experiences are suitable and appropriate for publication in journals and school and community news sites.