# Gemini Image Generation Prompt Cheat Sheet ## Creating Flyers, Posters & Visual Materials — High School Math Teachers *LIFT LAB Workshop | March 17, 2026 | CSUDH* **How to access:** Go to https://gemini.google.com → start a conversation → ask for an image **Powered by:** Google Imagen 3 **Free with your Google account** --- ## HOW TO REQUEST AN IMAGE FROM GEMINI Basic format: > "Create an image of [WHAT] in [STYLE] with [COLORS/MOOD]. It should include [TEXT/ELEMENTS]. Make it suitable for [PURPOSE]." The more specific you are, the better the result. After you get an image, you can: - Say **"Make it more colorful"** or **"Make it darker/lighter"** - Say **"Add [element]"** or **"Remove [element]"** - Say **"Try a different style"** (comic, watercolor, minimalist, photorealistic) - Download the image and paste it into Canva, Google Slides, or Docs --- ## 1. CLASSROOM POSTERS ### Math Concept Poster > "Create a colorful educational poster for a high school math classroom about [CONCEPT — e.g., 'the Pythagorean Theorem', 'slope-intercept form', 'order of operations']. Include a visual diagram, the key formula, and a simple real-world example. Style: bright, modern, engaging for teenagers. No people. Clean white background or gradient background." ### Motivational Math Poster > "Create a motivational classroom poster for high school students with the quote '[QUOTE — e.g., Do Hard Math, Math is Everywhere, Struggle is Part of Learning]'. Make it visually striking with bold typography and a math-themed geometric pattern background. Colors: [YOUR SCHOOL COLORS or 'vibrant blues and yellows']. Style: modern and professional." ### Vocabulary / Formula Poster > "Create an educational wall poster displaying the [TOPIC] formulas for a high school math classroom. Include: [FORMULA 1], [FORMULA 2], [FORMULA 3]. Use color-coding to highlight different parts of each formula. Style: clean, minimalist, easy to read from across the room. White or light background." --- ## 2. EVENT FLYERS ### Math Tutoring Flyer > "Create a professional flyer advertising FREE math tutoring at [SCHOOL NAME] high school. Include space for: days and times, room number, and a contact email. Style: energetic, welcoming, appealing to high school students. Use bold colors. Add math symbols and geometric shapes as decoration. Leave clear areas where I can add specific text details." ### Math Club Flyer > "Create an eye-catching flyer for a high school Math Club. The flyer should look fun and exciting — not intimidating. Include decorative math symbols (∑, π, √, ∞, ÷). Style: modern, colorful, appealing to teens aged 14-18. Leave space at the bottom for meeting time/location details. Horizontal format." ### Pi Day Event Flyer > "Create a festive flyer for a Pi Day celebration (March 14) at a high school. Include the Pi symbol (π) prominently, the number 3.14159..., and imagery suggesting a fun school event. Make it colorful and celebratory. Style: festive but professional. Leave space for event details." ### Academic Challenge / Math Competition Flyer > "Create a dramatic, exciting flyer for a high school math competition. Style: like a sports event poster — bold, high-energy, competitive. Include: calculator imagery, trophy imagery, and math symbols. Color scheme: bold and striking (e.g., navy and gold, or red and black). Leave areas for: competition name, date, how to sign up." --- ## 3. CLASSROOM HANDOUT HEADERS / BANNERS ### Worksheet Header Banner > "Create a decorative header banner for a high school math worksheet on [TOPIC]. It should be horizontal (wide and short — like a header strip). Include: the topic name '[TOPIC]' in bold text, math-themed geometric decoration, and space for Name/Date/Period. Colors: [COLOR PREFERENCE]. Style: clean and professional, not too childish." ### Unit Cover Page > "Create a professional cover page image for a high school [SUBJECT] unit on [TOPIC]. It should look like a textbook chapter opener — visually representing the concept with geometric shapes, graphs, or relevant imagery. Include the unit title '[TOPIC]' in large, clear text. Style: modern textbook design. Colors: [COLOR PREFERENCE]." --- ## 4. STUDY MATERIALS ### Formula Reference Card > "Create a visual reference card (like a bookmark or index card) for high school students showing key formulas for [TOPIC]. Include: [FORMULA 1], [FORMULA 2], [FORMULA 3]. Use color-coding, clear layout, and small visual icons. Style: compact, easy to study from, clean background. Portrait orientation." ### Mind Map / Concept Map Visual > "Create a visual concept map showing how [MAIN TOPIC] connects to related concepts: [CONCEPT 1], [CONCEPT 2], [CONCEPT 3], [CONCEPT 4]. Use nodes, arrows, and color-coding. Style: clear, educational, suitable for a high school classroom handout." --- ## 5. TEACHER MATERIALS ### Classroom Sign / Door Sign > "Create a classroom door sign for a [SUBJECT] class. Include: 'Welcome to [SUBJECT]!' and decorative math symbols or geometric patterns. Style: professional and welcoming. Colors: [YOUR PREFERENCE]. Portrait format." ### Parent Night / Back to School Slide Image > "Create a welcoming background image for a Back-to-School night presentation slide. It should feel warm and professional, with subtle math themes (geometric shapes, soft formulas in background). Colors: [SCHOOL COLORS if known, or 'warm blues and greens']. No text — just the background image." --- ## REFINING YOUR IMAGE: FOLLOW-UP PROMPTS After Gemini gives you an image, you can say: | What you want | What to say | |---|---| | More colorful | "Make the colors more vibrant and eye-catching" | | More professional | "Make it look more professional and polished" | | Different style | "Redo this in a comic book style" / "watercolor style" / "minimalist style" | | Add something | "Add a graduation cap to the image" | | Change colors | "Change the color scheme to blue and gold" | | Different mood | "Make it feel more fun and less formal" | | Better for print | "Make it suitable for printing in black and white" | | More space for text | "Add a large blank area at the bottom where I can add text" | --- ## TIPS FOR GETTING THE BEST IMAGES **Tip 1 — Be specific about style:** Add one of these to any prompt: "photorealistic", "digital illustration", "flat design", "watercolor", "comic book style", "minimalist", "3D rendered", "infographic style" **Tip 2 — Specify the purpose:** Always say what you'll use it for: "for a classroom poster", "for a printed flyer", "for a presentation slide", "for a social media post" **Tip 3 — Specify orientation:** - **Landscape/horizontal** = presentation slides, flyer backgrounds - **Portrait/vertical** = printed flyers, door signs, posters - **Square** = social media, handout headers **Tip 4 — Request text-free versions:** Say "No text in the image" if you want to add your own text in Canva or Google Slides. AI-generated text in images is often misspelled. **Tip 5 — Add to Canva for text:** Download your Gemini image → upload to Canva → add your own text, logos, and details using Canva's tools. This gives you the best of both: AI-generated visuals + Canva's typography. **Tip 6 — Color coordination:** If you know your school colors (ask your principal or check your school's website), always include them: "Use [SCHOOL NAME]'s colors: [COLOR 1] and [COLOR 2]" --- ## QUICK IMAGE PROMPT TEMPLATES Copy these, fill in the brackets, and you're ready: **Poster:** > "Create a [STYLE] classroom poster about [TOPIC] for high school students. Include [KEY ELEMENT]. Colors: [COLORS]. No people." **Flyer:** > "Create a [STYLE] flyer for [EVENT] at a high school. Leave space for [DETAILS TO ADD LATER]. Colors: [COLORS]. [ORIENTATION] format." **Header:** > "Create a [STYLE] header banner for a high school math worksheet on [TOPIC]. Include the title '[TOPIC]'. Colors: [COLORS]. Wide horizontal format." **Background:** > "Create a [STYLE] background image with math themes for a presentation slide. Colors: [COLORS]. No text."