{'fraction_non_alphanumeric': 0.020654044750430294, 'fraction_numerical': 0.0034423407917383822, 'mean_word_length': 5.847058823529411, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Impact of Undergraduate Science Course Innovations on Learning

Despite revealing some positive impacts, studies too often suffer from weak design and inadequate reporting. At many colleges and universities, the traditional model of science instruction—a professor lecturing a large group of students—is being transformed into one in which students play a more active role in learning. This has been attributed to mounting evidence that traditional lectures, recitations, and laboratory sessions do not guarantee that students develop deep understanding of critical concepts (1–5).