If you’re using Google Slides to create content that you later import into Classwork.com, you might occasionally want to change just one slide in the original Slides document.

It's simple! Just follow these instructions:

In Google Slides:

1. Open your Slides document and make your desired changes.

2. From the File menu, select Download, then PDF Document.

3. Save the document to your local computer.

In Classwork.com: 

1. Go to My Activities and open the Activity by selecting its title.

2. Select Edit Content.

3. In the left-hand panel showing the slides, select the slide you want to change.

4. From the Slide menu, choose Change Slide Background.

5. Select Upload a File.

6. Open the PDF file you saved earlier.

7. Choose the single slide you want to use as the new background and select Use Selected Page.

Your new slide background has been saved!