Notes, summaries, assignments, exams, and problems

The Case Against Mandatory Exams

Many people believe that exams should be mandatory, arguing they don't necessarily need to value student effort or attitude. However, I disagree with this perspective. Why should assessment focus solely on the final "product" rather than the entire learning process?

High Stress and Mental Health Concerns

Firstly, high school students often face numerous exams, frequently scheduled on the same day or within the same week. To achieve good marks for university admission, they study intensively. This immense pressure can be detrimental, causing significant stress and tiredness, which may eventually lead to mental health issues.

Unfairness Due to Cheating

Secondly, a significant number of students cheat on exams, sometimes... Continue reading "Mandatory Exams & School Uniforms: Student Impact Debated" »

Reduce Energy Consumption

There are many ways to reduce energy consumption in our daily lives:

• Turn off lights and electronic devices when not in use.
• Use LED light bulbs instead of traditional ones.
• Unplug chargers and appliances when not needed.
• Use public transport, bike, or walk instead of driving.
• Insulate homes properly to reduce heating/cooling needs.
• Use renewable energy sources like solar panels.

Small actions can make a big difference.

Reduce Water Consumption

Water is a vital resource, so it is important to reduce its use whenever possible:

• Take shorter showers and turn off the tap while brushing teeth.
• Fix leaks in pipes and toilets.
• Use dishwashers or washing machines only when full.
• Water plants early morning or late evening.
• Collect rainwater

Herzberg's Two-Factor Motivation Theory

Herzberg's Two-Factor Theory (1959) proposes that job satisfaction and dissatisfaction are influenced by separate sets of factors, rather than being opposite ends of a single continuum.

Hygiene Factors (Dissatisfiers)

Hygiene Factors (also called Maintenance Factors) are elements in the workplace that, when absent or inadequate, cause job dissatisfaction. However, when present, they only prevent dissatisfaction—they do not actively motivate employees.

• Examples:

  • Company policies and administration
  • Supervision quality
  • Salary and job security
  • Work conditions
  • Interpersonal relationships

• Case Example: A competitive salary prevents dissatisfaction but doesn't necessarily motivate employees to perform better.

Motivational

Cost Classification and Analysis for Business Success

Understanding Cost Classifications

Costs can be classified in several ways, providing different insights for business decision-making:

• Function: Such as the department incurring the cost (e.g., production, administration).
• Type: Categorized as Direct or Indirect costs.
• Behavior: How costs react to changes in output, including Fixed, Variable, and Semi-Variable costs.
• Time: Costs associated with a specific period (e.g., period costs).

Direct Costs (Prime Costs)

Direct Costs are expenses that can be easily and directly related to the production of a specific item or service. They are also known as prime costs. For example, the salaries of employees working directly in a production department or the... Continue reading "Cost Classification, Costing Methods, and Break-Even Analysis" »

Our Solar System

The Sun is the center of the place we call the Solar System. The eight planets that orbit the Sun are:

• Mercury
• Venus
• Earth
• Mars
• Jupiter
• Saturn
• Uranus
• Neptune

There are also five additional celestial bodies classified as dwarf planets. The five recognized dwarf planets are Ceres, Pluto, Haumea, Makemake, and Eris.

The Sun

The Sun is a large ball of hydrogen, helium, and plasma. It is around four and a half billion years old and appears white in color from space. Its real name is Sol. From Earth, it appears to move along an imaginary line called the Ecliptic.

The Planets

Mercury

Mercury is the smallest planet and the closest to the Sun. You could fit 19 Mercurys inside Earth. It is gray in color and lacks an atmosphere, moons, and a ring system.... Continue reading "Planets, Moons, and Stars in Our Solar System" »

How is a pure semiconductor changed into an N-type material?

An N-type semiconductor is created when pure semiconductors, like Si and Ge, are doped with pentavalent elements. When a pentavalent atom replaces a Si atom, four of its electrons bond with four neighboring Si atoms, leaving one free electron.

What is the difference between P and N type materials?

N-type semiconductors have an excess of electrons, while P-type semiconductors have an excess of "holes" where an electron could exist.

What are the uses of diodes?

The most basic function of a diode is changing AC current to DC current by removing some part of the signal. This makes them rectifiers. They are also used in electrical switches and surge protectors because they can prevent voltage... Continue reading "Key Concepts in Electronics, Energy, and Basic Science" »

Irregular Verbs: Past Participle Forms

• be - been
• bear - born
• beat - beaten
• become - become
• begin - begun
• bite - bitten
• blow - blown
• break - broken
• bring - brought
• build - built
• burn - burnt
• burst - burst
• buy - bought
• can - been able to
• catch - caught
• choose - chosen
• come - come
• cost - cost
• cut - cut
• deal - dealt
• dig - dug
• do - done
• draw - drawn
• dream - dreamt
• drink - drunk
• drive - driven
• eat - eaten
• fall - fallen
• feed - fed
• feel - felt
• fight - fought
• find - found
• fly - flown
• forbid - forbidden
• forget - forgotten
• forgive - forgiven
• freeze - frozen
• get - got
• give - given
• go - gone
• grow - grown
• hang - hung
• have - had
• hear - heard
• hide - hidden
• hit - hit
• hold - held
• hurt - hurt
• keep - kept
• know - known
• lay - laid
• lead - led
• learn - learnt
• leave - left
• lend - lent
• let - let
• lie - lain
• light - lit
• lose -

Key Plot Developments in the Montbarry Mystery

• Henry agreed with the other club members that Montbarry’s death seemed suspicious.
• Mr. Troy was unable to persuade Emily that Countess Narona had no ill intentions.
• Due to a deception, Dr. Bruno was led to believe that Montbarry’s death had been natural.
• The Countess returned to Venice after she started suffering from visions and paranoia.
• The only person who trusted Agnes’ story about the severed head was Dr. Bruno.

Critical Questions and Answers on the Montbarry Case

Countess's Safety in Venice from Agnes

The Countess assumed that Agnes would never come to Venice because of everything that had happened related to Montbarry’s death.

Dr. Bruno's Certainty About Montbarry

Dr. Bruno was sure because... Continue reading "Montbarry Mystery: Key Plot Points and Character Insights" »

Business Concept

1. Business Structure: Sole Proprietorship, Partnership, Corporation.
2. Business Size:
   • Microbusinesses: Up to 10 workers.
   • Small and Medium-sized Businesses (PYMES): 11 to 250 employees.
   • Macro businesses: More than 250 employees.
3. Economic Sector: Primary (extraction), Secondary (manufacturing), Tertiary (service).
4. Economic Activity: Industrial, Commercial, Service.
5. Scope of Activity: Local, Regional, Domestic, Multinational, Transnational.
6. Business Model: Retailer, Manufacturer, Fee-for-Service, Subscription, Freemium, Bundling, Marketplace, Affiliate, Razor blade, Franchise, Brokerage.
7. Description of Product or Service:
   • Product or service description
   • Product or service selling volume
   • Product or service selling prices
   • Product or service net sales
   • Net