You can add images to your LessonUp lesson in two ways:
As background image: the image fills the whole slide
As a component: the image is movable in the slide
Insert a background image
Click +Add, then click Image.
Choose an image from your own files, search in LessonUp or on the internet. Once you add the image, it will appear all over your slide.
You can adjust the slide layout to make room for (title) text on your slide.
If you prefer the image as a component (freely movable), click 'Position image freely' in the image options.