Researchers have investigated how teacher feedback contributes to students' learning, yet there is insufficient research into the connection between teacher feedback and student happiness, which is linked to engagement, socio-emotional well-being, and ultimately academic achievement. We coded lesson transcripts from elementary teachers to determine emergent patterns between types of teacher feedback and average student self-reports of happiness in mathematics. We found teachers to employ specific feedback more than general feedback. In addition, feedback for effort and ability accounted for a small percentage of feedback. Findings suggest that student happiness is linked to specific combinations of feedback dimensions. [For the complete proceedings, see ED606556.]