Understanding and analyzing data is a crucial aspect of quantitative literacy in the 21st century, leading scholars and policy makers to push for more rigorous instruction in this area rooted in statistical investigation. In this study, we examine 144 upper-elementary mathematics lessons on data and statistics topics to assess the extent to which instruction in this sample meets reformers’ goals. Analyses of videos and transcripts suggest that sample lessons emphasized the analysis of data through calculations and graph construction. However, they less often featured statistical investigation, with minimal emphasis on question formulation, data collection, and interpretation and with little to no attention paid to the concept of variability. We also note issues with the accuracy of statistics content presented to students. Results suggest focusing improvement efforts on all aspects of statistical investigation and considering ways to build elementary teachers’ content knowledge of statistics.

中文翻译：

---

探索中心趋势

理解和分析数据是 21 世纪定量素养的一个重要方面，领先的学者和政策制定者推动在这一领域扎根于统计调查的更严格的指导。在这项研究中，我们检查了 144 节关于数据和统计主题的高年级数学课程，以评估该样本中的教学在多大程度上符合改革者的目标。对视频和成绩单的分析表明，示例课程强调通过计算和图形构建来分析数据。然而，它们很少以统计调查为特色，极少强调问题的制定、数据收集和解释，很少或根本不关注可变性的概念。我们还注意到呈现给学生的统计内容的准确性存在问题。