Jigsaw, learning centers, and experiments are learner-centered instructional strategies. Jigsaw involves assigning students to "expert groups" to learn about different parts of a topic and then return to "home groups" to teach their topic to peers. Learning centers allow independent and self-directed learning through materials in designated classroom spaces. Experiments involve students collecting data or making observations through guided inquiry questions in groups. These strategies aim to make learning more interactive, collaborative, and student-driven.