These A Level Mathematics 7357 topics consistently produce the lowest scores. Prioritise these in your revision.
!
Proof by contradiction
Less than 10% of students completed proof by contradiction correctly in 2023. The core skill — stating the correct negation as an assumption — is widely missing.
Affects: 7357/2, 7357/3
!
Integration by substitution (complex algebraic manipulation)
Most students know the method but fail to eliminate all x terms or handle powers and roots correctly. The second substitution approach (x = …) almost always leads to incomplete elimination.
Affects: 7357/3
!
Newton's laws applied to connected systems and moments
Students set up inconsistent equations by mixing up mass and weight, taking moments about different points, or not drawing force diagrams. Over a third of students could not correctly model a rod or pulley system.
Affects: 7357/2
!
Statistical hypothesis testing: notation and conclusion
Students use incorrect parameter notation (X or P(X) instead of p or μ), confuse sample mean with population mean, or fail to conclude in context. Only about 20% scored all marks on hypothesis testing questions.
Affects: 7357/3
!
Rates of change (connected rates, chain rule in context)
Only about 10% of students correctly applied the chain rule to link dV/dt and dh/dt in context. Students can differentiate V with respect to h but cannot combine rates using the chain rule.
Affects: 7357/3
!
Newton-Raphson method: correct derivative
Students differentiate sin 2θ correctly but forget to differentiate the θ term, obtaining only 2cos 2θ instead of 2cos 2θ − 1. This single error typically costs two out of three marks.
Affects: 7357/1
!
Binomial distribution: assumptions stated in context
Under a quarter of students could state both binomial assumptions in context in 2022. Generic statements like 'probability is fixed' with no reference to the specific scenario score nothing.
Affects: 7357/3
!
Large Data Set specific content
Students confuse the years covered, the variables recorded, or invent details about the LDS. Only about 20% gained both marks on LDS interpretation questions in 2022.
Affects: 7357/3