FIGURE 1.

Example screenshots from “Experimental Design” interactive tutorial. Interactive tutorials were designed using consistently formatted interactions. These included module introductions (A), challenge questions (B), and specific feedback (C). Tutorials also include test tube graphics that allow students to track their progress through each module, review individual learning objectives (D), review entire modules (E), and review their progress through the entire tutorial (F). The test tube rack containing test tubes for all completed modules is accessible at any time during the tutorial by clicking on the small rack icon in the upper right corner of the tutorial interface. This allows students easy access for reviewing past content and tracking progress.