English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Electromagnetism (E&M) is often challenging for students enrolled inintroductory college-level physics courses. Compared to mechanics, themathematics of E&M is more sophisticated and the representations are moreabstract. Furthermore, students may lack productive intuitions they had withforce and motion. In this article, we explore the mathematization of electriccharge. Specifically, we explore how difficulties with positive and negativesigns can arise for learners who approach integers primarily as positions on anumber line.

When negative is not "less than zero": Electric charge as a signed quantity