Empirical research reveals that students face difficulties engaging in learning and achieving their goals in a variety of learning contexts. To study effectively, students need to regulate their learning process. In spite of increased understanding of cognitive aspects of self-regulation, motivational aspects of regulation have not yet been thoroughly probed. This study investigates how motivation is connected to self-regulated learning when elementary school students (N = 32) study science in real classroom contexts using gStudy software. This was done by: (1) identifying students' situated motivation during the learning process, (2) analyzing how the students with different motivational approaches activated cognitive self-regulation in authentic learning situations across multiple learning episodes, and (3) complementing the understanding with the students' individual accounts of their motivation regulation during the learning process. The results show that there are qualitative differences in the self-regulation tactics used by the high- and low-motivation students as they study. Motivation is linked closely to active self-regulation. (Contains 3 figures and 6 tables.)