Based on your search for automatic presentations, I recommend Tome. This AI-powered tool can transform your short prompts into complete, visually rich presentations in a single click, saving you valuable time and effort.

Here's how Tome can address your needs:

1. AI-Powered Storytelling: You can quickly create full presentations from short prompts. This feature is ideal for teachers who need to prepare lessons on various topics.

2. Seamless Media Integration: You can enrich your presentations with images, videos, live product mocks, and 3D prototypes. This can make your lessons more engaging and interactive.

3. Device Agnostic: Tome offers responsive layouts that adapt to any screen size. This ensures that your presentations can be viewed effectively on any device.

4. Template Options: If you're in a rush, you can use one of Tome's starter templates to quickly get your presentation started.

5. Analytics Tracking: Although this feature might be more useful for marketing and sales teams, it could also help you understand how your students are engaging with your presentations.

Tome offers a free trial with 500 credits, and for unlimited access, you can subscribe for $10/month. This could be a cost-effective solution for your automatic presentation needs.