When negative is not "less than zero": Electric charge as a signed quantity
英文摘要：
Electromagnetism (E&M) is often challenging for students enrolled in introductory college-level physics courses. Compared to mechanics, the mathematics of E&M is more sophisticated and the representations are more abstract. Furthermore, students may lack productive intuitions they had with force and motion. In this article, we explore the mathematization of electric charge. Specifically, we explore how difficulties with positive and negative signs can arise for learners who approach integers primarily as positions on a number line.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
