European Baccalaureate Mathematics (3-period course) common mistakes
European Baccalaureate Mathematics (3-period course) · Understand the traps and how to avoid them.
In the Mathematics 3-period written paper, students answer a question asking for a proof or a general demonstration by writing only the final numerical result, or by substituting one example and declaring the statement true.
The 3-period course spends less timetable time on proof technique than the 5-period course, so candidates rehearse routine computations and treat any 'show that' item as optional. Under exam pressure they default to the calculation they can do quickly, not the argument the mark scheme rewards.
What to do instead
Before the exam, build a one-page repertoire of the four or five standard argument forms used in the syllabus (direct algebraic proof, proof by exhaustion over a small case set, counterexample, contrapositive) and practise labelling which form each past-item demands. In the exam, underline the command word ('show', 'prove', 'justify', 'hence') and write the first and last line of the argument before filling in the middle.
In the Mathematics written paper, candidates use a calculator result (a rounded decimal, a graphed intersection, a numerical derivative) as the entire justification for an exact-value question, and lose the method marks even when the decimal is correct.
Calculators are permitted throughout, so students let the machine carry the reasoning and stop distinguishing between questions that demand an exact answer (surds, fractions of pi, logarithms) and those that accept a decimal to three significant figures.
What to do instead
Adopt a fixed habit: read the final line of the question for wording such as 'exact value', 'in terms of', or 'give your answer to 3 s.f.' and write the exact form first, then the decimal as a check. For calculus and trigonometry, always show the algebraic step before the calculator evaluation, so the method is visible on the script.
In the L1 written paper, the candidate reproduces memorised plot summaries and author biographies instead of building an argument from short quotations and precise textual evidence, so literary-analysis questions score in the lower bands.
Revision guides reward content recall, and students transfer that habit to an exam whose mark scheme rewards close reading, textual reference and a defended interpretation. Time pressure then pushes them toward safe generalities.
What to do instead
Practise writing body paragraphs to a fixed pattern: claim, short embedded quotation (under ten words), analysis of a specific word or image, link to the question. Prepare six to eight flexible quotations per set text that can be re-read against different prompts, and rehearse planning for ninety seconds before writing so every paragraph answers the actual question.
In the L2 written paper, candidates translate word for word from their first language, producing sentences with the wrong word order, false friends and literal idioms, and they answer comprehension questions by copying long stretches of the source text.
Under time pressure the cognitive load of composing in a second language pushes students back onto first-language syntax, and copying feels safer than reformulating. Many have never been explicitly taught how to paraphrase in the target language.
What to do instead
Drill three or four structures that differ sharply between the languages (negation, question formation, pronoun placement, tense sequencing) until they are automatic. For comprehension, practise the rule 'find the line, then rewrite it in your own words in one sentence', and in the writing task reserve five minutes at the end to check verb endings, agreements and articles rather than content.
Across the five written papers, candidates misallocate time: they overrun on the first long question, leave a whole section unattempted, or fail to leave the final ten minutes for checking, so marks are lost on questions they could have answered.
School mock examinations are often run as single lessons rather than full-length sittings, so students have never rehearsed the pacing of a three-hour paper or the decision to abandon a stuck question.
What to do instead
Sit at least two full timed papers per subject before the exam and record the clock time at which each section should end. Write those split times at the top of the answer booklet in the first minute, and adopt a rule: if a question has resisted for more than the marks it is worth in minutes, mark it and move on.
In the oral examination, the candidate prepares a memorised monologue on a favourite topic and then cannot answer follow-up questions, or freezes when the examiner changes the direction of the discussion.
Students prepare the presentation and neglect the interactive half of the oral, which is where most of the marks lie. Memorised text also collapses under a single unexpected question because it was never understood as a structure of ideas.
What to do instead
Prepare topic maps rather than scripts: for each theme, list five sub-questions, ten key terms and two contrasting viewpoints, and rehearse answering unseen follow-ups with a partner who is instructed to interrupt. Practise three repair phrases in the target language ('Could you rephrase that?', 'What I mean is...', 'Let me think for a moment') so a stumble becomes a pause rather than silence.
In the oral examination, candidates answer in the wrong language, or slip into their first language for technical vocabulary and numbers, and they do not use the source document when one is provided.
The oral may be taken in L1, in L2, or in a subject taught through L2 such as History or Geography, and candidates confuse the language of the paper with the language of the examination. Under stress, the first language returns for anything requiring quick recall, such as dates and figures.
What to do instead
Confirm in writing, before the exam session, which language each oral is conducted in and what the examiner expects. Build a personal glossary of twenty subject-specific terms (for History or Geography: source types, causality words, dates, place names) in the examination language, and rehearse the standard opening move of referring explicitly to the document's origin and purpose before analysing it.
In the oral examination, the candidate treats the discussion as a test of opinions and asserts positions without evidence, or contradicts the source document without noticing, losing the marks attached to use of the material and to reasoned argument.
Students equate oral confidence with volume of speech, and many have never been shown the assessment criteria for the oral, so they do not know that structure, reference to evidence and critical distance are what is being judged.
What to do instead
Obtain the oral assessment grid and translate it into a checklist: introduce the question, state a position, support it with a specific reference, acknowledge a counter-argument, conclude. Rehearse five-minute answers recorded on a phone, then listen back and count how many evidential references appeared.
Candidates treat the S7 A marks (formative assessment) as free marks and coast through the year, then discover at the end that their preliminary mark is too low to be rescued by the written papers alone.
The preliminary mark combines continuous formative assessment with the Pre-Baccalaureate examination, and students often do not know the weighting or which classroom behaviours generate A marks. They optimise for the visible exam and ignore the invisible accumulation.
What to do instead
Ask each teacher, in the first month of S7, exactly which pieces of work feed the A mark and how it is weighted against the Pre-Baccalaureate B mark. Keep a simple log of submitted work and oral contributions per subject, and treat every graded classroom task as a component of the final result rather than a rehearsal.
Candidates revise for the Pre-Baccalaureate examination as though it were a low-stakes mock, under-prepare, and then enter the written session with a weak B mark that anchors their final grade downward.
The Pre-Baccalaureate examination sits inside the school year, when other subjects and coursework compete for attention, and students assume it is diagnostic only. Because the preliminary mark is fixed before the written session, there is no later opportunity to compensate.
What to do instead
Schedule the Pre-Baccalaureate revision block as if it were the final examination, with full timed papers under exam conditions and the same materials allowed. Afterwards, request the marked script and the mark breakdown, and use the gap analysis to set the revision priorities for the written session.