How OnTrick lessons are checked

A maths page is only useful if the working is dependable. These are the checks used before a lesson is treated as ready to publish.

Work the example from start to finish

Every numeric example should have a complete route from the information in the question to the final result. Important algebra signs, units and percentage bases should stay visible rather than being hidden in a jump.

Check it a second way when possible

Different topics need different checks. An equation can be tested by substitution. A percentage can be run forwards again. A geometry answer can be compared with a rough estimate and its units.

Keep examples independent

Examples and explanations are prepared for OnTrick Maths. We do not reproduce paid solution manuals, copyrighted question banks or another website’s worked answers.

Use tools as checks, not authority

Calculators, spelling tools and publishing software can help catch routine errors, but they do not replace mathematical checking. The published explanation is judged by whether the reasoning and result can be followed and verified.

Corrections

When a genuine mathematical error is found, the calculation or explanation should be corrected rather than hidden. Reports are easiest to verify when they include the page address and the exact step in question.

Dates and examples

Original publication dates are retained when content is revised. Substantial edits update the modification date; dates are not deliberately staggered to create an appearance of publication history. Practice solutions should show enough intermediate working to reproduce the answer. Interactive results are arithmetic aids, not substitutes for the restrictions stated in a lesson.