Do students activate conceptual and procedural knowledgesimultaneously when learning fraction addition? In groundedfeedback, student actions on a target, to-be-learnedrepresentation are reflected in a more familiar feedbackrepresentation to promote conceptual learning withinprocedural practice. An experiment with 163 4th and 5thgraders shows improved learning with a grounded feedbacktutor over a symbols-only control with step-level right/wrongfeedback. Learning with grounding also transferred tosymbols-only assessment items, providing some support forthe simultaneous activation view.
