High-effect-size strategies, built in
Each breakout is engineered around instructional moves with strong effect sizes in Hattie's Visible Learning synthesis — not bolted on, but structural to how the locks work.
Classroom discussion & feedback
Every lock gives immediate, specific feedback, and the "why" panel models the reasoning — turning each attempt into a feedback loop, one of the highest-leverage moves in the research.
Concept sorting & evidence classification
The "check all the strong evidence" locks are classification tasks: students sort relevant from irrelevant, the decoy from the real. Categorizing to find structure is a well-supported deep-learning strategy.
Metacognitive & strategy instruction
CLEAR names the thinking move at each step. Making the strategy visible — "this is the Alternatives step" — is what pushes students from doing the task to understanding how they did it.
The TEKS correlation guide names the specific strategy and effect size engineered into every lock, alongside its ELAR standard and CLEAR focus.