Contribution: This article describes and evaluates a novel undergraduate communication skills course for engineering students. The course focuses on improving student communication skills by using interactive lectures and authentic assessment activities in a scalable manner. Background: Published studies and reports suggest communication skills are becoming increasingly important for young engineers. Accordingly, communication skills are often included in engineering curricula. Engineering graduates typically lack these skills because they underestimate the importance of communication skills, while methods in teaching and assessing these skills remain inadequate. Providing proper support to students in acquiring communication skills and subsequently assessing learning outcomes without significantly increasing teacher workload is a challenge. Intended Outcomes: The intended outcome described in this article involves a scalable approach to teaching communication skills to undergraduate engineering students. The approach focuses on interaction during live lectures, authentic activities, and technology to achieve efficiencies for a small number of teaching staff holding the course to a large student population. In line with the expectancy-value theory (EVT) framework, the expectation is that the approach will have a positive effect on student perceptions of the importance of communication skills, which predict positive learning outcomes. Application Design: The course includes live lectures, practical homework assignments, and other authentic activities like elevator pitching, participating in job interviews as well as workshops or presentations. The importance in live lectures is placed on achieving interactivity by using an audience response system (AuResS). A peer review approach is used to assess homework assignments. Data from a survey of students qualifying their perceptions of communication skills were collected four times during the semester and analyzed along w...