Terms of Service

Effective July 12, 2026. This is a conservative business summary, not legal advice.

Educational use

Muscle Math Mania workbooks provide supplemental educational practice. No grade, placement, test score, performance level or other academic outcome is promised. Adult supervision and independent judgment remain appropriate.

Orders and licences

Digital orders are processed and fulfilled by Lemon Squeezy; Amazon governs paperback orders when a listing is live. A purchased PDF is licensed for the buyer's personal household use unless the product listing states otherwise. It may not be resold, publicly posted or redistributed.

Refunds and support

Refund requests are handled according to the policy shown at checkout and the applicable platform's terms. Use the support instructions and include the order number, but never send payment-card information.

Availability

Prices, formats and availability may change. Website information will be corrected when a discrepancy is found.