Pick a skill
Choose what's hard right now, like fractions or word problems.
A short math check, a clear prerequisite map, and a practical at-home plan. See what to practice next, without the guesswork.
You don't need to be a math teacher to help your child make progress.
Choose what's hard right now, like fractions or word problems.
See what the eight answers show, then optionally try two different questions for a narrower follow-up.
See related foundations and print a short plan for home.
Move from foundational ideas to the next concept, one connection at a time.
The grid below uses 15 original demonstration skills, not the licensed Marble graph. Browse the separate graph explorer.
Select any of the 15 demonstration skills to see sample prerequisites. Open the full graph explorer →
Try one short, structured practice set. No signup or child profile required.
Start with eight original demonstration questions. A separate two-question follow-up can check one focus with fresh examples. This is not a validated diagnosis or an AI assessment; answers stay in this page.
We will show observed answers, evidence limits, related prerequisites, and specific practice suggestions.
Math learning is not a race. Rather than simply assigning more problems, look at a useful foundation and practice it in a calm, manageable way.
Subscription pricing is a planned experiment. Payments are disabled in this deployable demonstration.
Try before you commit.
For a longer-term support routine.
No. This is a short practice check using a demonstration question set. It cannot identify a learning disability, provide a grade-equivalent score, or establish complete mastery.
In this release, no account exists and the browser does not send or store responses on a server. Answers exist only in the open page until you leave or refresh. Standard server access logs may still be handled by your hosting provider.
Not yet. These are original demonstration questions and need independent curriculum and accessibility review before being marketed as a validated educational assessment.