Struggling with WASSCE Maths? Stop guessing. Let’s fix the gap step by step.
Mathematics Topic Lessons: Mensuration, Graphs, Bearings and Money Maths
Step-by-step Mathematics lessons on mensuration, graphs, bearings, percentages and simple interest, built around the mistakes WAEC examiners keep reporting.
Each lesson here focuses on one Mathematics topic and the specific mistakes WAEC examiners keep finding in candidates’ scripts. Read the lesson, then practise that topic straight away while it’s fresh.
New here? Start with How to Pass WASSCE and NOVDEC Core Maths, then pick your clinic: Number Skills, Simple Interest, Business Maths, Algebra, Graphs & Statistics, Mensuration & Geometry or Find Your Maths Gap.
Choose a topic in the Practice Zone →
Mensuration and geometry
Area, Perimeter or Volume? A Teacher’s Quick Diagnostic Checklist
Area, perimeter, or volume is meant for a struggling Ghanaian SHS learner who knows several mensuration formulas but cannot decide whether a practical situation requires distance around, flat…
Area and Volume in WASSCE: 10 Formula Errors and How to Fix Them
Formula Errors in Area and Volume is meant for a struggling Ghanaian SHS learner who remembers several mensuration formulas but misidentifies the dimensions, radius, height, or required unit.…
Graphs
Graphs in Mathematics: 6 Mistakes Students Must Avoid
In many Ghanaian SHS classrooms, the moment a Mathematics question says “draw the graph” or “use your graph to find,” some learners become quiet. Not because they…
📈 Go to the Graphs & Statistics Clinic: step-by-step lessons on scale, plotting, reading values, gradient, quadratic graphs and cumulative frequency.
Bearings
Bearings in Mathematics: 7 Tips to Read Directions Correctly
In many Ghanaian SHS classrooms, the moment some students hear “bearing,” their confidence drops. You will hear somebody say, “Sir, this one is for pilots and sailors.” Another…
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📘 New series
The Simple Interest Clinic: an 8-part series
From what P, R and T really mean to finding exactly where your answer went wrong. New parts every day. Start the series →
Percentages and money maths
Percentages in Mathematics: 6 Common Mistakes to Avoid
Percentages in Mathematics are treated like one of the “easy” topics in many Ghanaian SHS classrooms. The teacher writes a few examples on the board, the class…
Financial Maths: 5 Simple Interest Mistakes to Correct
Simple interest mistakes are common in many Ghanaian SHS classrooms, even though it seems like one of the friendliest topics in Mathematics. The formula is short. The…
Latest money maths lessons
New lessons on simple interest, profit and loss, discount, tax and hire purchase appear here as they are published.
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Simple Interest in Mathematics: What P, R, T, I and A Really Mean
You can probably say “I = PRT/100” in your sleep. But when the question hides the principal inside a story, gives the time in months or asks for…
Latest geometry lessons
New geometry lessons are on the way.
Stuck on something?
If a lesson doesn’t fully clear things up, send me your question and tell me where you got stuck.
Sources and further reading
The mistakes and topics in these lessons come from what WAEC examiners report year after year, matched to Ghana’s SHS curriculum. You can read the original sources here:
- WAEC Chief Examiner’s Reports: the yearly reports on where candidates lose marks, which these lessons are built on
- NaCCA SHS curriculum: the official Ghana Senior High School curriculum
- Ghana curriculum resources: official teaching and learning resources for the new curriculum
Written by
Dickson Sarpong
NTC-certified SHS Mathematics teacher in Ghana with WAEC marking experience, and author of The Bridge Series textbooks. Every lesson here is built around the mistakes WAEC examiners keep reporting.
About DicksonStuck? Ask a question
Want the whole topic, step by step? My textbooks, The Bridge to Mathematics and The Bridge to Additional Mathematics for SHS, follow the new curriculum and rebuild the basics as you go.
Read a free chapter →