Are you tired of the same old look in Google Slides? The new slides has added a few themes, but it is still pretty limited. There are places to get better presentation templates like slidescarnival.com or Google Templates which is where I found this photo album template.
You also have another option and that is to create your own template. You can do this by creating a new template and then editing the Master Slide and the other slide layouts to create slide templates for your presentation.
After creating a new Google Slide
Click on Help in the tool bar
Click edit master
This will open up a new window where you can select the layout of the Master slide which is the default layout for a new slide. You can also edit the layout of the other slides to create the look you are trying to achieve.
In the example below I added images as background to create place holders for text and images so students wouldn't have to do as much work in creating a nice looking slide they would simply add images and copy and paste their text.