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Preparatory classes for prestigious universities

René Cassin Highschool

Student at Institut Pythéas, Aix-Marseille University

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My Experience

My decision to enter a preparatory class (classe préparatoire) was driven by a dual ambition: to gain admission to a top engineering school and to challenge my scientific curiosity with complex concepts. This intensive year served as a true catalyst for personal and intellectual growth.

Key Takeaways:

Rigor and Methodology:

I forged a solid work discipline and developed the capacity to process dense volumes of information.

Resilience and Perseverance:

Faced with the demanding nature of the curriculum, I learned to turn difficulties into stepping stones for progress. My ability to bounce back is one of the core skills I acquired during this time in preparatory class.

Interpersonal and Oral Skills:

It was during the "khôlles" (weekly oral examinations) that I thrived the most. I discovered a genuine passion for oral exercises, developing my confidence in communicating technical ideas and my quick responsiveness to complex questions.

Transition to the Bachelor's Degree:

Despite a high level of investment, the teaching staff felt that my margin for progression would be limited for the second-year competitive exams. This experience allowed me to gain maturity and confidently transition toward a Bachelor's Degree (Licence) in Physics and Chemistry at UPPA in Anglet.

Academic Path

2020 - 2021 | PCSI Year

Physical Signals

  • Harmonic oscillator.
  • Signal propagation.
  • Geometric optics.
  • Introduction to the quantum world.
  • Electrical circuits within the QSA (Quasi-Static Approximation).
  • First-order linear circuits.
  • Damped oscillators.
  • Linear filtering.

Mechanics 1

  • Description and parameterization of a point's movement.
  • Description of the movement of a solid in translation and rotation around a fixed axis.
  • Linear momentum law.
  • Energetic approach to the movement of a material point.
  • Movement of charged particles in uniform and stationary electrical and magnetic fields.

Mechanics 2

  • Angular momentum law.
  • Energetic approach to the movement of a rotating solid around an oriented fixed axis in a Galilean reference frame.
  • Kinetic energy law for a deformable system.
  • Movement in a conservative central force field.
  • Movement of charged particles in uniform and stationary electrical and magnetic fields.

Thermodynamics

  • Microscopic and macroscopic description of a system at equilibrium.
  • Energy exchanged by a system during a transformation.
  • First principle. Energy balances.
  • Second principle. Entropy balances.
  • Thermal machines.

Fluid Statics

  • Elements of fluid statics in a Galilean reference frame.

Induction and Laplace Forces

  • Magnetic field.
  • Action of a magnetic field.
  • Linear momentum law.
  • Laws of induction.
  • Fixed circuit in a time-dependent magnetic field.
  • Moving circuit in a stationary magnetic field.

Analysis (Fundamentals and Real Analysis)

  • Fundamental techniques of differential and integral calculus.
    • Functions of a real variable with real or complex values.
    • Antiderivatives and linear differential equations.
  • Real numbers and numerical sequences.
  • Functions of a real variable: limits, continuity, and differentiability.
    • Limits and continuity.
    • Differentiability.
  • Asymptotic analysis.
  • Integration.
  • Numerical series.
  • Functions of two variables.

Algebra (Sets, Numbers and Linear Algebra)

  • Set theory reasoning and vocabulary.
  • Complements of algebraic calculus and trigonometry.
  • Complex numbers.
  • Polynomials.
  • Matrix calculus and linear systems.
  • Linear vector spaces.
    • Vector spaces.
    • Finite-dimensional spaces.
    • Linear maps.
  • Matrices and determinants.
    • Matrices and linear maps.
    • Determinants.
  • Real pre-Hilbert spaces.

Probability and Counting

  • Counting.
  • Probability.
    • Probability on a finite sample space, random variables, and distributions.
    • Expected value and variance.

Transformation of Matter

  • Description and evolution of a system toward a final state during a chemical transformation.
    • Physico-chemical system.
    • Chemical transformation of a system.
  • Temporal evolution of a system undergoing a chemical transformation.
    • Kinetics in a closed reactor with uniform composition.

Relations Between Chemical Entity Structure, Physical Properties, and Reactivity

  • Structure of chemical entities.
    • Lewis model of the covalent bond.
    • Geometry and polarity of chemical entities.
    • Structure of organic chemical entities.
  • Relations between entity structure and macroscopic physical properties.
    • Interactions between entities.
    • Phase changes.
    • Solubility, miscibility.
    • Amphiphilicity.
  • Reactivity of organic species and initial applications in synthesis.
    • Reactivity of organic species and writing reaction mechanisms.
    • Organic synthesis in the laboratory.
    • Characteristic group modifications: example of haloalkanes.
    • Construction of the carbon skeleton: synthesis and use of Grignard reagents.

Transformations of Matter: Evolution of a System and Reaction Mechanism

  • Microscopic modeling of a chemical transformation.
  • Catalysis.

Microscopic Structures and Physical Properties of Solids

  • Perfect crystal model.
  • Metals and alloys.
  • Covalent and molecular solids.
  • Ionic solids.

Chemical Transformations in Aqueous Solution

  • Acid-base and precipitation reactions.
    • Acid-base reactions.
    • Dissolution or precipitation reactions.
  • Oxidation-reduction reactions.
    • Oxidants and reductants, redox reactions.
    • Potential-pH diagram.

Reactivity, Transformation in Organic Chemistry, and Synthesis Strategy

  • Spectroscopic characterization techniques.
    • UV-visible and infrared absorption spectroscopies.
    • Proton nuclear magnetic resonance spectroscopy (1H NMR).
  • Oxidation-reduction reactions in organic chemistry.
    • Oxidation level of organic species.
    • An example of interconversion between characteristic groups: from hydroxyalkyl group to carbonyl group and vice versa.
  • Activation of characteristic groups.
    • Nucleophilic activation of alcohols and phenols.
    • Electrophilic activation of alcohols.
    • Electrophilic activation of the carbonyl group.
  • Protection of characteristic groups and synthesis strategy.
    • Protection-deprotection.
    • Elementary approach to retrosynthetic analysis.
    • Electrophilic activation of the carbonyl group.

Analyze

  • Analyze the need and requirements.
  • Define the boundaries of the analysis.
  • Analyze functional and structural organization.
  • Analyze performances and deviations.

Model

  • Choose physical quantities and characterize them.
  • Propose a knowledge and behavior model.
  • Validate a model.

Solve

  • Propose a resolution process.
  • Implement an analytical resolution process.
  • Implement a numerical resolution process.

Experiment

  • Set up and operate a system.
  • Propose and justify an experimental protocol.
  • Implement an experimental protocol.

Communicate

  • Search for and process information.
  • Produce and exchange information.

Design

  • Design the architecture of an innovative system.
  • Propose and choose technical solutions.

Soft Skills

Intellectual rigor, perseverance in the face of complexity, workflow organization under heavy workload, analytical capability, pressure management, and resilience.