Notes, summaries, assignments, exams, and problems

Technological Progress and Innovation

Technological progress was the very heartbeat of the Industrial Revolution. It was not a single invention that changed everything, but rather a continuous process of innovation. Macro-inventions, such as the steam engine or mechanical spinning machines, opened entirely new possibilities. These groundbreaking innovations were then followed by micro-inventions—smaller, cumulative improvements that refined and expanded their use.

In the textile industry, a series of pivotal inventions revolutionized the production of cotton, making Britain the dominant textile exporter by the 19th century. Key advancements included:

• The flying shuttle (John Kay, 1733)
• The spinning jenny (James Hargreaves, 1764)
• The water frame

Comprehensive Glossary of Terms

Absorb

To interest someone a great deal and take up all their attention and energy.

Bite One's Lips

To press the soft parts of the front of the mouth between the teeth.

Bite One's Nails

To press the hard parts on the end of one's fingers between the teeth.

Bond

A legal written agreement or promise.

Box Office Hit

A film's success in terms of the number of tickets sold.

Breathe New Life Into Something

To refresh something old.

Bring About

To cause something to happen.

Bring the House Down

To make the audience laugh, clap, or cheer loudly for a long time because they liked the performance.

Conductor

Someone that directs the orchestra.

Content

Fairly happy and satisfied.

Counsellor

Someone who gives advice on a specified subject.

Current

The First Industrial Revolution: Economic Shifts

Around 1780, the Industrial Revolution began in northern England (Manchester). This period marked a fundamental change in technologies, company organization, economy, and society, leading to a transformation in the production of goods. It started when some clothing entrepreneurs began using machinery, which increased productivity, and organized production in factories. Later, steam engines were introduced to power these machines. These business owners, as capital providers, reaped all the profits. These characteristics—the pursuit of profit, the central role of capital providers, and the market's pivotal role in resource distribution—transformed the economic system from late feudalism and... Continue reading "The Nineteenth Century: Industrialization, Society, and Global Power Shifts" »

Cartoon

• Uvalde School Shooting (Texas, 2022): A gunman killed 21 people, including 19 young students. After the tragedy, many U.S. politicians still refused to change gun laws, showing how school shootings are becoming expected rather than shocking. This supports the cartoon's idea that society is becoming used to gun violence.
• NRA Convention (2022): Just days after Uvalde, the National Rifle Association (a powerful U.S. gun rights group) held a large meeting to promote gun rights and products. This shows how the gun industry continues as normal even when children die—matching the cartoon’s idea of protecting business over human life.
• “JR-15” Rifle for Kids: A U.S. gun company created a version of the AR-15 (a military-style weapon) called

Cells are open systems – they exchange both matter and energy with their environment.

Cellular Open Systems: Examples of Exchange

• In: Water, oxygen, nutrients, solar energy (in plants)
• Out: Carbon dioxide, waste, thermal energy, kinetic energy

Cellular Needs and Organ System Functions

Surface Area to Volume Ratio (SA:V)

Cells work best with a high SA:V ratio (more membrane per unit of volume).

• Small cells = high SA:V → efficient transport
• Large cells = low SA:V → less efficient

SA:V Ratio Calculation Formulas

• Surface Area of cube:

Anwar's London Adventure: A Letter to Pedro

To: pepogarcí[email protected]
Subject: Excited to Join You in London!

Hi Pedro,

It was great to get your message! I'm very excited about my stay in London. I'm from Trondheim, Norway, where I live with my parents and younger sister. We're all into sports, especially skiing and ice hockey, which I've been playing for years. Luckily, we have lots of snow to enjoy safely!

I want to improve my English while exploring London. Although I read quite well, I'm still slightly shy when speaking. Hopefully, living with your family will help me become more confident. I'm also eager to explore the city's history and culture.

Could you tell me a bit about your hobbies? I'd love to know what you enjoy doing and any tips you... Continue reading "Personal Journeys and Lifestyle Perspectives" »

Key Concepts & Artistic Movements

Historical & Economic Concepts Defined

Armed Peace

A state of tension where countries maintain prepared military forces but are not in active war.

Taylorism

A system of scientific work organization aimed at increasing efficiency through task division and control.

Fordism

A mass production model based on standardization and the assembly line to manufacture goods quickly.

Combustion Engine

A machine that generates motion by burning fuel to transform chemical energy into mechanical energy.

Imperialism

A policy of expansion and domination by one country over other territories for economic and political control.

Metropole

A central city or country that politically controls a colony or dependent territory.

Protectorate

A

The Human Respiratory System

By Marco Rios

Ventilation: Air Movement in the Lungs

Pulmonary Ventilation

The total volume of air breathed in and out per minute.

Alveolar Ventilation

The volume of air exchanged between the atmosphere and the alveoli per minute.

The Lungs: Core Organs of Respiration

A pair of organs consisting of the lower part of the respiratory airways, pulmonary circulation, and connective tissue.

Pleural Sacs and Cavity

Thin, fluid-filled membranes that enclose the lungs. The space between the pair is known as the pleural cavity.

Alveolar Cell Types

Type I Cells

Form the walls of the alveoli, facilitating gas exchange.

Type II Cells

Secrete pulmonary surfactant.

Pulmonary Surfactant

A substance that reduces the surface tension of water inside... Continue reading "Human Respiratory System Functions" »

The Francoist Dictatorship (1939-1975)

Key Concepts of the Franco Regime

• Maquis: Individuals who fought against the Francoist regime, often through guerrilla warfare.
• Sección Femenina: The sole women's organization within the Falange, focused on instilling traditional female roles and Francoist ideology.
• Marshall Plan: A United States initiative for rebuilding Allied countries in Europe after World War II; Spain was notably excluded due to its political alignment.
• Economic Autarchy: An economic policy characterized by national self-sufficiency and minimal trade with the outside world.
• Isolationism: A political or economic policy that isolates a country from participating in international alliances or relationships.
• Rationing: The controlled distribution

Education: Technology's Role in Modern Learning

As the proverb goes, "You never stop learning" — but what’s the best way to learn today? In many schools, books and worksheets are still used. However, in recent years, learning apps and platforms have been introduced in classrooms all over the world.

It's widely agreed that lessons are becoming more interactive and personalised thanks to digital tools. A teacher once said that students remember better when they enjoy the process. And it’s true — if learning relied solely on textbooks, boredom would quickly set in. However, combining elements like games, music, and videos transforms learning into an exciting and memorable experience.

Imagine using video games to learn mathematics or history.... Continue reading "Navigating Modern Life: Choices for Well-being and Growth" »