Our Classes

MASERA

Welcome everyone to the largest source of independent original ESL class material in the world.

Here you'll find all kinds of ready-to-use classes for your advanced ESL journey! Become a MASERA Student or join our subscription program for ESL Teachers today!

The World of DC Comics: A Heroic Journey

Marcelo Serafim

3 days ago3 min read

The World of DC Comics: A Heroic Journey

Founded in 1934 as National Allied Publications, DC Comics is one of the oldest and most influential comic book publishers in the world....

Marcelo Serafim

5 days ago4 min read

Steve Jobs: Visionary and Innovator

Early Life and Beginnings Steve Jobs was born on February 24, 1955, in San Francisco, California. Adopted shortly after birth, Jobs grew...

The Decline in Birth Rates: Causes and Consequences

Marcelo Serafim

5 days ago4 min read

The Decline in Birth Rates: Causes and Consequences

In recent decades, countries worldwide have experienced a steady decline in birth rates. Once a symbol of societal growth and stability,...

Marcelo Serafim

Dec 93 min read

The Rise and Fall of Kodak

Founded in 1888 by George Eastman, Kodak revolutionized photography by introducing the first consumer-friendly camera, the Kodak Camera....

The Fascinating World of Genetic Memory, and Inheritance of Skills

Marcelo Serafim

Dec 93 min read

The Fascinating World of Genetic Memory, and Inheritance of Skills

DNA, the blueprint of life, encodes all the genetic information required to build and maintain an organism. It is made of nucleotide...

Marcelo Serafim

Dec 63 min read

The Rise of Artificial Meat

Artificial meat, also known as lab-grown or cultivated meat, is produced using cellular agriculture. This groundbreaking method is...

Marcelo Serafim

Dec 63 min read

AI and Medicine

Artificial intelligence (AI) is revolutionizing healthcare by offering innovative solutions for diagnostics, treatment planning, and...

The Top 10 Geniuses in the History of Mankind

Marcelo Serafim

Dec 23 min read

The Top 10 Geniuses in the History of Mankind

Throughout human history, extraordinary individuals have revolutionized the world with their unparalleled intellect and creativity. Here...

Paranormal Phenomena: Unraveling the Unknown

Marcelo Serafim

Dec 23 min read

Paranormal Phenomena: Unraveling the Unknown

Paranormal phenomena encompass events or experiences beyond the scope of scientific understanding, capturing humanity's imagination for...

The Art of War by Sun Tzu: A Timeless Masterpiece

Marcelo Serafim

Nov 294 min read

The Art of War by Sun Tzu: A Timeless Masterpiece

Sun Tzu’s The Art of War is one of the most influential texts in military strategy and leadership. Written over 2,500 years ago during...

Marcelo Serafim

Nov 203 min read

The Star Wars Saga

The Star Wars saga, created by George Lucas, is one of the most influential franchises in film history. It began in 1977 with Star Wars:...

Marcelo Serafim

Nov 203 min read

Adidas: A Sibling Rivalry

Adidas, a globally recognized sportswear brand, was founded in 1949 by Adolf "Adi" Dassler in Herzogenaurach, Germany. Its roots trace...

Marcelo Serafim

Nov 204 min read

The Roman Empire

The Roman Empire, one of the most influential civilizations in history, originated in 27 BCE after Julius Caesar's assassination and the...

Marcelo Serafim

Nov 153 min read

Aliens and UFOs: An Everlasting Mystery

The concept of aliens and unidentified flying objects (UFOs) has fascinated humanity for centuries. From ancient cave paintings depicting...

Henry Ford: A Visionary Innovator and the Father of the Two-Day Weekend

Marcelo Serafim

Nov 153 min read

Henry Ford: A Visionary Innovator and the Father of the Two-Day Weekend

Henry Ford (1863–1947) was a pioneer in the automotive industry whose innovations transformed manufacturing and labor practices...

The Rise of ADHD and Other Attention and Anxiety Disorders

Marcelo Serafim

Nov 114 min read

The Rise of ADHD and Other Attention and Anxiety Disorders

In recent years, attention and anxiety-related disorders have been on the rise, particularly conditions like Attention Deficit Disorder...

Marcelo Serafim

Nov 84 min read

The 47th President of the United States

Donald Trump’s political journey has been one of the most unconventional and scrutinized in modern U.S. history. Originally a real estate...

Marcelo Serafim

Nov 84 min read

Cosmetic Surgery

Cosmetic surgery is a thriving field with continuous advancements, driven by the increasing demand for aesthetic improvements and...

Marcelo Serafim

Nov 14 min read

Samsung: An Everything Giant

Samsung has grown from a modest South Korean trading company founded in 1938 into one of the most influential global technology giants...

GOT - Game of Thrones, is it the best show ever?

Marcelo Serafim

Nov 14 min read

GOT - Game of Thrones, is it the best show ever?

"Game of Thrones," the television series adaptation of George R.R. Martin's A Song of Ice and Fire novels, left an indelible mark on...