Forbus KD, Carney K, Sherin BL, Ureel II LC. VModel: A Visual Qualitative Modeling Environment for Middle-school Students. AIMag [Internet]. 2005Sep.15 [cited 2024Apr.25];26(3):63. Available from: https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/1826