BGCSE Geography (Botswana Senior Secondary Education BSSE) common mistakes
BGCSE Geography · Understand the traps and how to avoid them.
When labelling a cross-section of the Earth, the candidate writes 'crust', 'mantle' and 'core' in the right order but puts the boundary depths and relative thicknesses in the wrong places, or labels the mantle as liquid and the outer core as solid.
Textbook diagrams are remembered as a picture rather than as a set of facts with numbers attached, and the words 'outer' and 'inner' are recalled without the physical state that goes with each.
What to do instead
Build a table with four rows (crust, mantle, outer core, inner core) and three columns (approximate depth range, state, key composition) and learn it, then redraw the diagram from the table without looking. State aloud why the outer core is liquid (it is the only layer that generates the magnetic field by flowing).
Asked to explain why an earthquake or volcano occurs at a named plate margin, the candidate writes only 'because the plates move' or 'because of friction' without naming the plate types, the direction of movement, or the landform produced.
The candidate has memorised the conclusion rather than the chain of cause and effect, so under time pressure only the first link of the chain is written.
What to do instead
Practise writing every tectonic answer as a numbered chain of at least four links, for example: two plates converge, the denser oceanic plate subducts, friction and pressure build at the locked zone, the rock snaps and seismic waves radiate. Do this for all four margin types until the chain is automatic.
When interpreting a climate graph, the candidate reads the temperature line against the rainfall axis or confuses the two scales, and then describes a month as 'wet' when it is only warm.
Two vertical axes on one graph are visually easy to swap, and candidates read the shape of the curve rather than checking which axis and which units belong to which line.
What to do instead
Before reading any value, circle the axis label and its units in the colour of the matching line, and write 'left axis = rainfall in mm, right axis = temperature in degrees C' at the top of the graph. Then read three months only (highest, lowest, one middle) and state both values for each.
Explaining the water cycle, the candidate lists the processes (evaporation, condensation, precipitation) as a vocabulary list without linking them into a continuous system, and omits that water is neither created nor destroyed.
The topic is taught as a labelled diagram, so candidates reproduce labels in sequence rather than describing transfers of water between stores.
What to do instead
Rewrite the cycle as a story about one water molecule, naming the store it leaves and the store it enters at each step, and finish with the sentence that the total amount of water in the system stays constant. Use the words 'store', 'transfer' and 'flow' deliberately.
In a river or coastal question, the candidate names a landform (meander, oxbow lake, spit, stack) but cannot say where in the course or coastline it forms, or what process (erosion, transportation, deposition) created it.
Landform names are learned as a list with pictures, without attaching each one to a location and a dominant process.
What to do instead
Make a three-column grid: landform, where it is found (upper, middle or lower course; concordant or discordant coast), and the process responsible. Then answer each practice question with the pattern 'X forms at Y because process Z operates there'.
Describing an ecosystem, the candidate lists animals and plants but does not use the terms producer, consumer, decomposer, food chain or nutrient cycle, and cannot explain what would happen if one part were removed.
Candidates answer with general knowledge about wildlife instead of the geographical vocabulary the mark scheme rewards, and they do not think in terms of interdependence.
What to do instead
For one named local ecosystem, draw a food web and a nutrient cycle, then write two 'what if' sentences predicting the knock-on effect of removing a named species. Rehearse the words producer, consumer, decomposer and interdependence until they appear naturally in answers.
In population questions, the candidate describes a population pyramid ('the base is wide, the top is narrow') without interpreting what that means for birth rate, life expectancy, dependency or service provision.
The skill of reading the shape is taught separately from the skill of drawing conclusions, so description stops where analysis should begin.
What to do instead
Use a fixed three-sentence frame for every pyramid: what the shape shows, what that implies about births and deaths, and one consequence for the country (for example demand for schools or for care of the elderly). Practise on pyramids for a young and an ageing population until the frame is automatic.
On a tourism or industry question, the candidate gives only benefits (jobs, income) and no costs or disadvantages, or gives a one-sided list with no named example.
Case-study material is recalled as a set of positive facts, and candidates do not build in the habit of balancing an argument.
What to do instead
Prepare one named case study per topic in a two-column table of advantages and disadvantages, with at least three points in each column. In the exam, deliberately write 'However' and add one cost and one management response before finishing.
When answering a map-skills question, the candidate gives a direction as 'top left' or a distance without units, does not give a six-figure grid reference in the order eastings then northings, and ignores the scale bar.
Map reading is practised casually without a fixed procedure, and the eastings-before-northings rule is easily reversed under pressure.
What to do instead
Adopt the routine 'along the corridor, then up the stairs' for every grid reference and say it silently each time. Measure distance with the scale bar and always write the unit. For direction, use compass points or bearings, never screen positions. Do ten grid references and five distances from one map as a warm-up.
Presenting fieldwork data, the candidate draws a bar chart for continuous data or omits a title, axis labels and units, and then describes the graph instead of interpreting the pattern it shows.
Chart choice is decided by what looks familiar rather than by the type of data, and candidates treat the graph as the answer rather than as evidence for a conclusion.
What to do instead
Learn three rules: continuous data such as temperature over time needs a line graph, categories need a bar chart, and proportions need a pie chart. Check title, both axes with units, and a key before moving on. Then always add two sentences saying what the pattern is and one possible reason for it.