MEP EDAD Bachillerato common mistakes
MEP EDAD Bachillerato · Understand the traps and how to avoid them.
In Matemática, reading a word problem and immediately writing an equation with the numbers in the order they appear in the text, without first defining what each unknown represents.
Under time pressure, candidates pattern-match to a familiar procedure and skip the translation step from words to symbols, so relationships like 'la mitad de la edad de Ana' get inverted.
What to do instead
Before writing any equation, write a one-line declaration list ('x = edad de Ana ahora; x+5 = edad en 5 años') and re-read the problem against it before solving.
In Español, answering comprehension questions from memory of the topic rather than returning to the specific paragraph that supports the answer.
Candidates trust gist comprehension, and distractors are written to match general knowledge or the most memorable sentence, not the actual text.
What to do instead
For every answer, locate and underline the exact sentence or line that supports it; if no line supports it, the option is wrong even if it sounds true.
In Ciencias, confusing the definitions of mass, weight, density, and their units, and applying formulas without converting units first (e.g., grams mixed with kilograms, mL with L).
Everyday language uses these terms loosely, and candidates memorize formulas symbolically without attaching units to each quantity.
What to do instead
Carry units through every calculation as if they were algebra, and cancel them; if the final unit is not the one asked for, the setup is wrong.
In Estudios Sociales, treating dates and events as isolated facts to memorize rather than as causes and consequences, so questions about 'consecuencia de...' or 'principal causa de...' are answered with the event itself.
Study habits reward rote memorization of timelines, and candidates never practice the causal reasoning the exam actually tests.
What to do instead
For each major event, write a three-column card: antecedente / hecho / consecuencia; drill by covering the middle column and predicting it.
In Inglés, choosing an answer because a word in the option appears in the passage, without checking whether the grammar of the sentence or the logic of the question fits.
Lexical matching is a fast, low-effort strategy, and candidates with limited grammar confidence default to it.
What to do instead
Eliminate options by grammatical category first (does the blank need a noun, verb, or preposition?), then by meaning; never select on word overlap alone.
In Formación Ciudadana, answering normative questions about rights and duties with what 'should' happen morally rather than what the legal framework (Constitución, Código, reglamento) actually establishes.
Candidates conflate personal ethics with civic law, and the exam deliberately offers plausible 'fair-sounding' options that are legally incorrect.
What to do instead
Anchor each answer to a named norm or institution; if you cannot name the source, flag the item and return to it rather than guessing on intuition.
In Matemática, stopping at an intermediate result (e.g., finding x when the question asked for 2x+3, or the area when it asked for the perimeter) and not re-reading the actual question asked.
Cognitive load peaks at the moment of solving, so the final verification step is skipped; the answer is often present as a distractor.
What to do instead
Circle the question's final demand before solving, and write the last line as a full sentence ('la edad de Ana es 12 años') to force the check.
In Ciencias Biológicas, describing processes (photosynthesis, respiration, mitosis) as lists of steps without tracking what enters, what exits, and where in the cell it occurs.
Textbooks present processes as sequences, and candidates memorize order without building a model of inputs, outputs, and location.
What to do instead
For each process, draw a simple diagram with labeled arrows for inputs and outputs and mark the organelle or tissue; redraw from memory before the exam.
In Español, writing an essay or open response with no thesis and no explicit structure, producing a text that is coherent to the writer but not to the evaluator.
Candidates write as they think, in one continuous draft, and never plan or review for organization.
What to do instead
Spend the first two minutes writing a one-sentence thesis plus three supporting points; write one paragraph per point; reserve the last three minutes to check that each paragraph opens with its point.
Across all domains, allocating time evenly across items and running out of time on the last section, leaving easy items blank.
Candidates do not know the section weights or their own speed, and they get stuck on one hard item out of a sense that leaving it is failure.
What to do instead
Before the exam, time yourself on full practice sections; in the exam, set a per-item cap (e.g., 90 seconds), mark and skip, and never leave a blank-return to marked items with remaining time.