Based on your query, I would recommend DreamStudio. This tool uses artificial intelligence to generate images from text prompts, which aligns perfectly with your need to create pictures.

The AI Image Generation feature of DreamStudio allows you to input a text description of the desired image, and the tool will generate an image based on your prompt. This can be particularly useful in creating visual representations of concepts, making them easier for students to understand.

Additionally, DreamStudio allows you to adjust the style, number, and other elements of the image, providing you with the flexibility to create unique images for different learning materials. Once you're satisfied with the generated image, you can download it for use in your teaching materials.

Here are some potential classroom applications of DreamStudio:

• Visualizing Concepts: Create images that represent abstract concepts for easier understanding.
• Enhancing Presentations: Generate unique images for student presentations.
• Art Projects: Use as a tool for students to explore digital art creation.
• Science Visualization: Create images that represent scientific concepts or phenomena.
• Story Illustration: Generate illustrations for student stories.

DreamStudio operates on a credit system, with each credit valued at approximately $0.01. New users receive 25 free credits, and additional credits can be purchased as needed.