Student Created Rubrics: Ask students to contribute to the creation of a rubric that defines success. A reading response task, a multi-modal presentation, or a group discussion leads to higher levels of learning when students are included in defining success.
Learning Contract: Ask students to create and agree to a learning contract at the beginning of a unit. The learning contract can define the learning goals, the "photo album" of evidence of learning, and agreed upon activities. At numerous times during the unit, ask students to revisit the contract, record new learning or muddy points and to get feedback from you or other peers.
Muddy Point Board: Designate an area in the room or a board for students to pin questions, muddy points, or topics they'd like the class to revisit. Asking students to periodically pick a question or comment from the board to discuss can build student ownership of learning.