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XYLEX · Teaching tool

Keep a record of the step where a learner gets stuck.

XYLEX turns HowHow Classroom’s teaching approach into a tool. Children write as usual; AI suggests possible difficulties, and the teacher reviews them before choosing the next practice.

拍懂 XYLEX

Chinese version

One question, one learning difficulty

A possible difficulty is a specific step, such as misreading the question or forgetting a unit after calculating correctly. It is a suggestion for teacher review.

  1. Complete the workThe child answers on paper as usual.
  2. Suggest a possible difficultyAI proposes a step where the child may be stuck. This is a candidate for review, not a verdict.
  3. Teacher reviewThe teacher confirms, corrects or rejects it, including unclear handwriting or an excessive diagnosis.
  4. Targeted practiceA suitable question addresses the step the teacher confirmed.
  5. Check again after a few daysA new question checks whether the same difficulty remains.

Synthetic example — not a real learner’s answer

12 × 4 = 48: the calculation is correct, but the unit is missing.

Possible difficulty: “no unit in the answer” → teacher confirmation → watch the unit in the next question. AI may be wrong, so the teacher decides.

Actual app screens

The app interface shown here is in Chinese. The worksheet images have been checked for identifiable student information.

  • XYLEX Chinese interface: a photographed primary maths worksheet, with corners marking the area for review.

    Capture the work

  • XYLEX Chinese interface: a correct numerical answer missing its unit, with teacher controls to confirm, correct or reject the AI suggestion.

    The teacher reviews the suggestion

  • XYLEX Chinese interface: a diagnostic report for six questions with written learning feedback.

    A report for this piece of work

  • XYLEX Chinese interface: a grid of follow-up questions and a new word problem.

    Try a new, related question

  • XYLEX Chinese interface: conceptual, procedural and application analysis with follow-up practice.

    Follow-up practice

AI suggests; the teacher decides.

Handwriting recognition can misread work, and AI can overdiagnose. Teachers can confirm or correct a suggestion, or reject a result that is unclear or goes too far.

XYLEX does not write answers for children or make the final grading decision. It helps the teacher focus on the step that needs attention.

What is available now?

XYLEX is already used in HowHow Classroom’s own lessons: the child photographs homework, the teacher confirms the difficulty, and related practice follows. Homework diagnosis is included in monthly and term lesson plans.

Availability and eligibility for schools and learning centres: 【TBC: XYLEX feature, subject and eligibility scope】

Product demonstration

The flow diagram and missing-unit example on this site are synthetic examples. The app screenshots above are real.

See the XYLEX demo

Evidence and limitations

More than 10,000 reviewed questions
Each record represents one question from daily homework at the founder’s own learning centre, as of October 2026. This measures use, not accuracy or effectiveness.
Average maths score: 62.6 → 75.8 (+13.2)
Five students had paired midterm and final scores; all five improved. This is an early observation with a small sample and no control group. The change cannot be attributed to the product.

Where to go next

For parents

XYLEX follows the same teacher-led approach used in HowHow Classroom’s lessons.

How lessons work

For schools and learning centres

Institutional enquiries have their own contact route, separate from family lesson enquiries.

Institutional partnerships