A colorful hand-drawn diagram illustrating the water cycle:
        - Evaporation (arrows from ocean)
        - Condensation (clouds forming)
        - Precipitation (rain from clouds)
        - Collection (rivers, lakes)
        - Include simple icons: sun, cloud, raindrops
        - Vibrant educational style

An educational diagram of photosynthesis in plants:
        - Show sunlight, leaves, chloroplast
        - Indicate CO2 intake, O2 release, glucose production
        - Simple labeling of main components
        - Light green, yellow color scheme
        - Hand-drawn arrows connecting steps

A cross-sectional diagram of Earth's interior:
        - Layers: Crust, Mantle, Outer Core, Inner Core
        - Color-coded layers with labels
        - Show temperature gradient or simplified representation
        - Hand-drawn style with bold outlines
        

A hand-drawn style diagram showing a basic chemistry reaction:
        - Example: Hydrogen + Oxygen -> Water
        - Show molecules (H2, O2) combining into H2O
        - Arrows indicating reaction progress
        - Educational, minimal color palette
        - Bubble or beaker icons for lab context

A labeled human digestive system diagram:
        - Esophagus, Stomach, Intestines, etc.
        - Illustrate main organs and flow of food
        - Hand-drawn lines with clear labels
        - Soft pastel colors for friendly educational look