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Interleaved vs. Blocked Practice: The Contextual Interference Effect

Interactive simulator of the contextual interference effect: train three skills either blocked, interleaved or random and watch how each order trades immediate practice accuracy against long-term retention.

Algorithms & AI2DModerate60 FPS📱 Mobile-adapted

What is the best order to practice several skills — one at a time in long blocks, or all mixed together? This simulator trains three skills, tower A / B / C, under a chosen practice schedule and visualizes each skill's memory as a growing column (long-term strength) topped by a fading glow ring (short-term priming). A live trial history and two readouts — immediate in-session accuracy versus predicted retention after a rest interval you control — make the counterintuitive result visible: interleaving looks worse while you are training, and wins after the training stops.

⚙ Under the hood

This simulation demonstrates various learning strategies and their impact on knowledge retention. Users can experiment with different approaches to optimize their learning process.

Learning Strategies

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install