This is a timely post. Just last night my 8 y/o asked if she could create a presentation on my laptop like they do at school. I have no idea what software they use at the elementary school.
I've let her play around with Google Docs before. But what I really wanted was something like Creative Writer that is more kid friendly. I used Gemini (sorry) to suggest some software and it suggested "Book Creator" which is intended for schools/teachers. I signed up as a fake teacher and added my kids as students and they did create some really creative books, importing images, and adding their own drawings. But it's still missing that kid-friendly vibe like Creative Writer.
Check out Canva. It might even be what they're using at school already. It doesn't have the simplicity and fun of the old stuff, but it's intuitive to use even for kids. A lot of features where they're broken convention in ways that actually make more sense than the standard, for example resizing images keeps the aspect ratio by default instead of stretching.