Nuclear magnetic resonance (NMR) spectroscopy is vital to synthesis and provides rich problem-solving opportunities to organic chemistry students. Using the theories of scaffolding, interleaving, and blocking, our research systematically explores how textbooks introduce and reinforce spectral features when teaching students to solve ¹H NMR spectroscopy problems. Specifically, we investigated the ¹H NMR spectral features presented in worked examples and practice problems across four undergraduate organic chemistry textbooks. We examined the frequency and ordering of spectral features to explore how the textbooks could support scaffolded instruction. Spectral features like the number of signals and chemical shift were covered by problems more frequently, while integration was covered least. Our findings suggest that textbooks do not provide sufficient practice with all ¹H NMR spectral features. We observed no discernible pattern in how textbooks ordered spectral features of ¹H NMR in problems, indicating that there is little systematic method to the design of textbook chapters. Implications for textbook authors and editors, instruction, and research are discussed.

中文翻译：

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支持有机化学教科书中具有1H NMR光谱特征的教学支架

核磁共振（NMR）光谱对于合成至关重要，并为有机化学专业的学生提供了丰富的解决问题的机会。我们使用脚手架，交错和阻塞的理论，系统地探索教科书在教学生解决¹ H NMR光谱学问题时如何引入和增强光谱特征。具体来说，我们调查了¹在四个本科有机化学教科书中，实例和实践中遇到的问题都给出了1 H NMR光谱特征。我们研究了频谱特征的频率和排序，以探索教科书如何支持支架式教学。诸如信号数量和化学位移之类的光谱特征更常被问题覆盖，而积分却被覆盖得最少。我们的发现表明，教科书并未针对所有¹ H NMR光谱特征提供足够的实践。我们在教科书中如何在问题中排序¹ H NMR的光谱特征方面没有观察到明显的模式，这表明教科书各章的设计几乎没有系统的方法。讨论了对教科书作者和编辑，教学和研究的影响。