I am looking for resources on strategies for teaching oral and written communication in large-cap classes (i.e. classes 50-100+).
A good place to start research on this topic is the library's Teaching Excellence in Higher Education research guide:http://library.uhd.edu/teachingexcellence. (You can easily find a list of all of the library's research guides by selecting the Research Guides tab on the library's homepage https://www.uhd.edu/library/Pages/library-index.aspx. Select either Guides by Subject or the Education link to pull up a list of all the guides for Education.)
The Teaching Excellence guide is organized under tabs. Under Finding Books you will see some recent titles in the Spotlight on Teaching Excellence in Higher Education box. On the left side of the page the Finding Books box provides a link to the catalog, while below it, the Suggested Topics box provides a link that will bring up a catalog search for "college teaching." A catalog search using the terms "college teaching" and "class size" brings up several titles that may be of interest. For example: Teaching the large college class: a guidebook for instructors with multitudes, by Frank Heppner (http://library.uh.edu/record=b3784286~S14) and Strategies for energizing large classes: from small groups to learning communities, by Jean MacGregor...[et al.] (http://library.uh.edu/record=b2840968~S14)
Two boxes of sample database searches are provided under the Databases tab. The Education Article Databases box suggests useful databases for higher education topics. For a simple search on your topic, select ERIC and then add Education Full Text. (To do this, click on the "Choose Databases" link next to "Searching: ERIC" at the top of the search screen. On the following screen select the box for Education Full Text, which is located near the bottom of the right column. Be sure to click "Okay" at the top of the list to add a database.) Next, enter the following search terms: Large group instruction AND College teaching AND Teaching methods. On the left side of the page select the option to limit your search to Full Text. You should pull up approximately ten articles.
Directly searching any of the Education journals under the Journals tab is another way to locate articles on your topic. The Websites tab provides links to other college and university Teaching Excellence Centers, which may also be a source for the resources and strategies you are looking for.