# k12-check-for-understanding > Creates a Check for Understanding (CFU) for a math topic or standard: 1–3 targeted formative items whose distractors co… Creates a Check for Understanding (CFU) for a math topic or standard: 1–3 targeted formative items whose distractors come from documented student misconceptions, plus a teacher guide routing each likely response to a specific next instructional step. Load BEFORE asking any clarifying question about grade, standard, or topic. This skill is for math; for other subjects, help as you normally would and don't mention the skill to the user. Triggers on asks to create, write, generate, or design a check for understanding, formative check, quick check, or exit ticket for a math concept or standard, and on implicit signals like "I need to see who got it before I move on." Not a quiz, test, or practice set — a CFU is read for what it reveals, not scored, so a numbered quiz or a bare answer key is a different job. Does not create a lesson (k12-lesson-plan-creation, which brings its own exit ticket), tier one (k12-lesson-differentiation), or prepare a teacher to teach one (k12-lesson-prep). - Type: Skill - Made by: anthropics - Category: Education - Formats: Skills - Version: 9d2eb49 - Source: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding - Page: https://pluginboard.ai/skills/k12-check-for-understanding-anthropics ## Works with - ChatGPT - Claude - Gemini - GitHub Copilot - Cursor - Claude Code - Codex - Antigravity - Gemini CLI - Replit - OpenClaw - OpenCode - Hermes Agent ## Install ### ChatGPT In ChatGPT: Download the k12-check-for-understanding folder and zip it, then Plugins → Skills → Create → Upload from your computer. Business and Enterprise plans. View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Claude In Claude (web or desktop): Download the k12-check-for-understanding folder and zip the folder itself, then upload it in Customize → Skills. View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Gemini In Gemini: Download the k12-check-for-understanding folder, then at gemini.google.com click Customize → Skills → Create → Upload and pick the folder (or a .zip of it). View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### GitHub Copilot Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.copilot/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Cursor Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.cursor/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Claude Code Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.claude/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding Or all of K-12 Education, in Claude Code: ```text /plugin marketplace add anthropics/k12-teacher-skills /plugin install k12-education@k12-teacher-skills ``` ### Codex Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.agents/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Antigravity In Antigravity: Copy the k12-check-for-understanding folder into ~/.gemini/config/skills (Antigravity app and IDE) or ~/.gemini/antigravity-cli/skills (Antigravity CLI). View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Gemini CLI Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.gemini/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Replit Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding .agents/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### OpenClaw Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.openclaw/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### OpenCode Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.config/opencode/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding ### Hermes Agent Run in your terminal: ```shell npx -y degit anthropics/k12-teacher-skills/plugin/skills/k12-check-for-understanding ~/.hermes/skills/k12-check-for-understanding ``` View the folder on GitHub: https://github.com/anthropics/k12-teacher-skills/tree/HEAD/plugin/skills/k12-check-for-understanding --- From Pluginboard (https://pluginboard.ai).