Study Links Working Memory and Math

Working memory acts as the brain's 'mental scratchpad,' allowing for the temporary holding and manipulation of information. This cognitive workspace is essential for multistep math problems, which require students to hold instructions, retrieve math facts, and track their progress simultaneously. Research indicates that working memory capacity is a stronger predictor of academic success in mathematics than IQ scores alone. The relationship between working memory and math skills changes over time; in early grades, number sense is more critical, but working memory becomes increasingly important in second grade and beyond. Longitudinal studies show that visuospatial working memory, in particular, becomes more influential as math concepts become more complex. For children with math disabilities, the connection between working memory and math may be weaker initially but strengthens in later stages of learning. For neurodivergent learners, such as those with ADHD, traditional approaches like rote memorization and timed drills can heighten anxiety and be counterproductive. Difficulties with working memory, along with other executive functions like cognitive flexibility and inhibitory control, can lead to rushing, trouble applying new rules, and not catching mistakes. Strategies that reduce the cognitive load on working memory are particularly effective. Techniques like "chunking" problems into smaller steps, using visual aids like diagrams and number lines, and offloading information by jotting down intermediate steps can free up mental resources. For students with dyscalculia, which often involves visuospatial memory challenges, these external aids are crucial. Explicitly teaching executive function strategies within a math context can be highly beneficial. This can include modeling how to highlight key information, using checklists, and verbalizing the problem-solving thought process. Structured games that involve turn-taking and strategy can also help to strengthen underlying executive function skills. Interventions that combine verbal and visual strategies have been shown to improve word problem-solving by decreasing the demand on working memory. For example, a student might underline key parts of a word problem (verbal cue) while also drawing a diagram to represent the quantities (visual cue). Consistent practice with these strategies can help make mathematical processes more automatic, further reducing the strain on working memory.