K-12 Check for Understanding
1 to 3 math questions built from real student misconceptions, plus next steps.
Official Anthropicby AnthropicChecked October 18, 2026
A Claude for Teachers skill that writes short formative checks for math. Wrong answer options come from documented misconceptions, and a teacher guide says what to do next for each likely response.
Who it is for
- Math teachers
- Instructional coaches
- Tutors
Prompts to try
Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.
Create an exit ticket on comparing fractions for 4th gradeWrite a quick check for understanding on solving two-step equationsMake a formative check for place value with a teacher guideHow to install it
In Claude Code
git clone https://github.com/anthropics/k12-teacher-skillsclaude plugin marketplace add ./k12-teacher-skillsclaude plugin install k12-education@k12-teacher-skills
In Claude.ai
Already included for Claude for Teachers accounts; on other plans, add the repo as a marketplace under Customize > Plugins.
Good to know
Math only; for other subjects Claude helps normally.
Unlock the install steps
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How we checked it
Confirmed SKILL.md at plugin/skills/k12-check-for-understanding/SKILL.md in anthropics/k12-teacher-skills via the GitHub API; skill folder last changed 2026-10-14, repo has 569 stars and was pushed 2026-10-14; license headers credit Anthropic and Learning Commons under Apache 2.0.
Source: github.com/anthropics/k12-teacher-skills/tree/main/plugin/skills/k12-check-for-understanding