Maratón 500

Main ideas and lessons from the video (Maratón 500)

1) Opening / logistics for a marathon practice session

• The session starts with a quick audio check (“Can you hear me okay?”) and a welcome to the audience on YouTube/Kick.
• Andrés López introduces himself and explains the marathon format:
  • The goal is productivity and practice, focusing mainly on the Science Social Practice block (solving about 30 questions).
• The instructor emphasizes:
  • Working step-by-step
  • Underlining key parts of each question to focus on what matters

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Methodology repeatedly used to solve questions

• Step-by-step approach
  1. Read the question carefully.
  2. Underline key terms in the prompt (e.g., “reasons of race/religion…”, “constant amount of gas”, “only variable changed”, etc.).
  3. Eliminate wrong options using logic tied directly to the statement.
• Multiple-choice strategy
  • Look for “trigger words”/constraints (e.g., “fixed amount,” “without changing other conditions,” “only variable is time,” “freedom of expression,” etc.).
  • Avoid assuming beyond what the text/data provides.
  • Use the provided scheme/graph as the main evidence.

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Detailed recurring instructional examples

A) Refugee definition & multiple-choice elimination (social sciences)

• Core concept used
  • A “refugee” (per the Geneva Convention) is someone outside their country due to a well-founded fear of persecution for specific reasons:
    • Race
    • Religion
    • Nationality
    • Belonging to a particular social group
    • Political opinions
• The discussion stresses that:
  • Internal displacement (moving within the same country) is not the same as refugee status.
  • Economic migration alone does not fit the refugee definition.
  • Those persecuted for violating political expression within their own state context don’t match the “outside country + escape from persecution” pattern.
• Practical example (Colombia)
  • If someone in Colombia is persecuted for political ideology and goes to another country that provides protection, they become a refugee.

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B) Sexual orientation / anti-discrimination law text (social sciences)

• Main lesson:
  • International/constitutional protections against discrimination based on sexual orientation aim to:
    • Prevent abuse
    • Guarantee fundamental human rights
    • Ensure equal protection
• The instructor rejects options that describe the purpose as primarily promoting the UN, rather than protecting rights and diversity.

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C) Social movements (MTS vs PHRP) (social sciences)

• Movements described:
  • MTS: Brazilian workers/landless rural people; demand agrarian reform (land redistribution/reorganization).
  • PHRP: Barcelona-based movement for truly public housing; uses protests such as occupying empty buildings.
• Key comparison method:
  • Identify target population and objective (rural vs urban sector).
• Conclusion approach:
  • Choose the statement that captures a fundamental difference in objectives/targets.

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D) Anti-corruption incentive program (undesired effect logic) (social sciences)

• Scenario:
  • Government offers rewards for reporting corruption crimes, requiring good faith (no false claims).
• Strategy:
  • Identify which option is NOT a benefit / is an unwanted effect.
• Result logic:
  • Options supporting more arrests/effectiveness count as benefits.
  • The selected answer is treated as the one that could be problematic within the program’s logic.

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E) Fracking stance reversal (campaign vs post-election) (reading comprehension)

• Concept:
  • Distinguish between what the governor says during the election campaign vs after being elected.
• Method:
  • Check whether the reason changes category (e.g., environmental vs economic).
• Conclusion:
  • During campaign: against for environmental reasons
  • After election: agrees for economic reasons

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F) Economic model question (neoliberalism focus) (social sciences)

• Prompted policy elements:
  • Promote the private sector
  • Reduce the state
  • Open the economy to the world
  • Generate employment
  • Increase exports/imports
• Elimination:
  • Social democracy usually implies a strong state
  • Protectionism favors national companies and typically involves regulations/taxes
• Answer direction:
  • The response aligned with neoliberalism (reduced state intervention; market-driven economy)

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G) State of siege & constitutional powers (social sciences)

• Explanation includes:
  • State of siege is a presidential decision that concentrates powers and allows actions across branches under constitutional authority.
• Multiple-choice logic:
  • Select the option reflecting the main intention: maintain public order and prevent armed uprisings (not explicitly “new elections” or punishing electoral fraud).

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H) Freedom of expression vs closing alternative media (social sciences)

• Legal-constitutional method:
  • The proposal to close/banning media is evaluated against Colombia’s constitutional principle of freedom of expression and the idea that repression isn’t justified through ordinary restriction.
• Chosen option emphasizes:
  • The bill is incorrect because it contradicts freedom of expression.

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I) Ukraine speech: intention of rhetoric in war coverage (social sciences)

• Main lesson:
  • Determine the intended purpose of the president’s speech:
    • To frame Ukraine as a victim and shift responsibility
    • To argue that reports don’t align with Ukraine’s position
• Elimination:
  • Reject interpretations suggesting Ukraine is asking for insufficient support.

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J) Escazú Agreement commentary & argument validity (social sciences)

• Key reasoning:
  • A journalist generalizes from one country’s denial of climate change to “none of the countries will act.”
• Instructor rejects it as overgeneralization from a single case.
• Lesson:
  • Avoid drawing universal conclusions from insufficient evidence.

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K) Mechanism to approve citizen proposals (formal process) (social sciences)

• Method:
  • The video contrasts “awareness campaigns/protests” with a formal constitutional mechanism.
• Selected formal mechanism:
  • Present a bill/legislative initiative with citizen support (e.g., signatures), then deliver it to Congress.
• Emphasis:
  • Formality requires structured steps and institutional submission.

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Later part: natural sciences practice (physics, chemistry, biology)

After the social-sciences block, the video shifts to natural sciences questions, with “around 30 little questions” in total—answered quickly with reasoning.

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Physics examples (main lessons)

• Ideal gas behavior (pressure vs temperature at constant amount)
  • Observed trend: as temperature increases (K), pressure increases.
  • Reasoning:
    • With amount of gas constant, pressure rise matches the gas-law relationship.
  • Wrong options typically claim changes like changing moles/volume/mass in a sealed fixed container.
• Forces on an object on an incline (free-body diagram)
  • When moving at constant speed:
    • Include: applied force (parallel), normal force (perpendicular), gravity (downward), friction (opposes motion)
  • Correct diagram matches these constraints.
• Tension in hanging strings supporting a traffic light
  • If mass increases while tension stays the same, the angle must change so components balance the weight.

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Chemistry examples (main lessons)

• Atomic neutrality
  • Neutral atom ⇒ protons = electrons
  • Neutrons do not affect electrical charge; more neutrons changes mass/isotopes, not neutrality.
• Electronegativity and bond type
  • Small difference ⇒ covalent; large difference ⇒ ionic
  • Using periodic table values: chlorine is much more electronegative than cesium ⇒ ionic bond
• Surfactant micelles
  • Model:
    • Hydrophobic tails cluster inward away from water
    • Hydrophilic heads face outward toward water
• Anaerobic fermentation
  • Alcohol production depends on enzymes
  • Without enzymes, production stops
  • Supports a mental model: sugars + enzymes → alcohol (absence of oxygen is not the defining issue if fermentation is defined as anaerobic)

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Biology examples (main lessons)

• Deforestation affecting two bird species
  • Both rely on shared resources (fruit/seeds)
  • Less habitat/food ⇒ population decreases (eventually death reduces individuals)
• Lysogenic cycle (virus in bacteria)
  • Key prediction: prophage carried through bacterial reproduction, with possible later activation
• Phosphorus cycle
  • Major source: phosphate rocks
• Humidity experiment design
  • Valid experiment requires everything equal except the tested variable
  • Identified mistake: samples not taken at the same time (time of day affects humidity)

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Graph interpretation method (natural sciences)

• The instructor repeatedly advises:
  • Don’t rely on “always/never” statements without checking graph intervals.
  • Choose the option whose description truly matches the graph’s changing regions—especially near where the motion starts.

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Administrative / motivational segment (Grupo 500 marathon)

• Prizes and raffles
  • Viewers are encouraged to share/repost to spread the marathon.
  • Winners are announced via social platforms (Kick/YouTube/Zoom), including “movies outing” and other prizes.
• Another instructor introduction:
  • A “professor” appears for the natural sciences segment (Diego Fernando Chestnut), described as a physiology instructor/monitor.

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Speakers / sources featured (as identified in the subtitles)

Speakers (people)

• Andrés López
  • Medical student; Grupo 500 instructor/co-founder in this session
• Diego Fernando Chestnut
  • Introduced as a physiology/medicine student and natural sciences instructor

Sources referenced (concepts/documents/organizations)

• Geneva Convention
  • Refugee definition (“Geneva Convention on the Status of Refugees”)
• Human Rights Commission / United Nations Human Rights
  • Referenced in the sexual orientation discrimination discussion
• NATO
  • Referenced in the Ukraine conflict discussion
• Escazú Agreement
  • Referenced in the environmental governance/journalism critique portion
• United Nations / FAO (Food and Agriculture Organization)
  • Referenced in food waste/hunger statistics
• IGAC / IGAC institute
  • Referenced in the páramos/moorlands ecosystem discussion