There is no built-in, specific projection option within the Showcase app, but there are still many ways you can share or cast your screen somewhere while Showcase is running. It depends a lot on what kind of device you are using, and what other resources you have at your disposal.
For comprehensive How-Tos for each available projection option, read our in depth blog on the topic.
Can I cast from Chromecast?
Totally! You can download the Google Cast app onto your Android device & cast the whole screen, which will include Showcase if you open it. The fuller Chromecast help article on this is here.
Slightly different - If you want to cast from a laptop, your showcases are visible at https://app.showcaseworkshop.com, so you could use the Google Cast Chrome extension on that website.
Do bear in mind however that our calculators and .html.zips don't work on the website - they need to be viewed on a tablet to actually function with the calculations etc.