You don’t need to know how to code to build a Gem. You just need to be able to describe what you want.

Open Gemini: Go to gemini.google.com

Find the Manager: On the left-hand sidebar, click Explore Gems or Gem Manager.

Start New: Click + New Gem.

The "Big Three": Give your Gem a Name (e.g., "5E Lesson Architect"), a Description, and Instructions.

Save & Test: Use the Preview pane on the right to test it. If it’s working well, hit Save.

To get the best results, use the P.A.R.T.S. framework when writing your Gem’s instructions:

Persona: Tell it who it is. "You are an expert 9th-grade Biology teacher with a focus on inquiry-based learning."

Audience: Who is the output for? "Write for students with a 4th-grade reading level" or "Write for a formal parent newsletter."

Rules: Set boundaries. "Never give the answer immediately; ask a guiding question first." or "Always use the 5E Instructional Model."

Task: What is its main job? "Generate three differentiated exit ticket questions based on the topic I provide."

Steps/Format: How should it look? "Present the output in a table with columns for 'Activity,' 'Duration,' and 'Materials'."

Pro Tip: Use the "Use Gemini to rewrite instructions" button (the pencil icon) to let the AI polish your rough draft into a professional prompt.

Knowledge Grounding: You can now upload PDFs, Syllabus files, or link a NotebookLM notebook. This ensures the Gem only uses your approved materials rather than general internet data.

Workspace Integration: If you have a Workspace Education account, you can access your Gems directly in Gmail or Google Docs sidebars to draft emails to parents or provide feedback on essays.

Sharing with Students: You can share a link to your Gem. Students can then use your "Socratic Tutor Gem" to get help with homework without you needing to be online 24/7.

It’s Hallucinating: If the Gem makes things up, update your instructions to include: "If you don't know the answer based on the provided files, say you don't know."

Too Wordy: Add a rule: "Keep all responses under 200 words and use bullet points."

Check the Age: In most school domains, students must be 13+ (or 18+ depending on admin settings) to interact with shared Gems. Refer to the SISD AUP for more information.