PowerPoint allows students to go beyond a standard slideshow presentation and incorporate various interactive elements that can enhance learning and keep the audience engaged. Some ideas for interactivity include:

Polls and surveys: Students can create informal poll or survey slides to get immediate feedback from the audience on various topics related to their project. PowerPoint makes it easy to insert poll questions that viewers can respond to using their devices. Polls are a great way to break up sections of the presentation and encourage participation.

Quizzes: Students can insert quiz slides to test the audience’s understanding and recall of key information from the presentation. PowerPoint allows for the creation of multiple choice, true/false, and fill-in-the-blank style questions with scores that are automatically tracked. Quizzes promote active learning among viewers.

Hyperlinks: Throughout the slides, students can embed hyperlinks that viewers can click on for more detailed information, examples, multimedia content etc. This allows presenting supplemental material without interrupting the main flow. Hyperlinks provide an interactive element and aid recall of information.

Animations: Students can make their slides more lively by incorporating build and motion path animations. For example, they can animate bullet points to be revealed one by one or animate images and graphics to fly, fade or zoom in/out. Appropriate use of animation keeps the audience engaged and guides them through the presentation in a dynamic manner.

Slide transitions: Instead of simple slide changes, students can opt for creative transition effects like wipe, fade or fly-in when switching from one slide to the next. Transitions promote smooth navigation and a polished, engaging user experience for viewers.

Comments: Students can enable audience comments on slides so viewers can type questions, thoughts or remarks on the presentation as it progresses. This facilitates live interactions and discussion. Comments help presenters gauge comprehension, clarify doubts and adapt delivery in real-time.

Video/audio: Short instructional or explainer videos, podcast clips, audio transcripts etc. can be embedded at relevant points to break up text-heavy slides and appeal to different learning styles. Multimedia maintains interest and shows concepts in a visual or auditory manner.

Images/graphics: Sparse use of photos, diagrams, charts, graphs, mind-maps etc. boosts slide aesthetics and storytelling ability. But students must ensure all visual elements directly support the presentation goals and comply with copyright and attribution guidelines. Images aid understanding complex topics.

Touch/pen input: For presentations delivered on tablets or digital whiteboards in classroom settings, students can design slides that are interactive with touch/pen. For example, adding labeled hotspots that users can tap to reveal more information or initiate an animation. This level of hands-on engagement fosters active learning.

Mini activities: Students may include slides with drag-and-drop activities, matching/sequencing tasks, labelling diagrams etc. Viewers can complete these mini assignments using the available presentation tools. Short immersed learning experiences reinforce retention of key details better than passive viewing alone.

Hyper-local content: Students can identify and incorporate locally relevant data, statistics, people, organizations, locations etc. into examples. When the audience sees familiar names and contexts embedded in the presentation, they connect better with the material. This localization strategy boosts comprehension and interest.

So PowerPoint provides a wide assortment of built-in and third-party tools that allow students to thoughtfully transform standard slides into an interactive multimedia learning experience. By selecting the right combination of interactive elements, students can engage their viewers continuously and evaluate adoption of the presented concepts in a memorable manner. The level of presenter-audience interactivity inherently improves with digital delivery over traditional formats. An interactive capstone presentation allows students to demonstrate not just subject expertise but also technology skills crucial for their future careers.