top of page
Our Classes
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!
Search
The Devastating Floods in Rio Grande do Sul: A Crisis Unfolding
Recent weeks have witnessed a tragic natural disaster unfold in the southern Brazilian state of Rio Grande do Sul, as torrential rains...
Marcelo Serafim
May 15, 20243 min read
The Four-Day Workweek: A Paradigm Shift in the World of Work?
The concept of a four-day workweek has recently gained significant momentum, with several companies and countries piloting or considering...
Marcelo Serafim
May 14, 20244 min read
Creationism, Evolution, and Intelligent Design: A Clash of Perspectives
The origins of life and the universe have been subjects of intense debate and contemplation throughout human history. Two primary schools...
Marcelo Serafim
May 14, 20243 min read
Breaking Bad: From Good to Evil
Breaking Bad, a critically acclaimed television drama, chronicles the transformation of Walter White, a high school chemistry teacher,...
Marcelo Serafim
May 14, 20244 min read
Project Management: A PMBOK Guide Perspective
Traditional project management, often referred to as "waterfall" methodology, is a linear and sequential approach to managing projects....
Marcelo Serafim
May 14, 20244 min read
What is a Sales Funnel
The sales funnel is a visual representation of the customer journey from initial awareness of a product or service to the final purchase...
Marcelo Serafim
May 14, 20243 min read
Understanding Cancer
Cancer is a complex group of diseases characterized by the uncontrolled growth and spread of abnormal cells. These cells can invade and...
Marcelo Serafim
Apr 27, 20243 min read
True Crime
The annals of crime are filled with chilling tales that leave a lingering sense of horror and disbelief. These crimes stand out for their...
Marcelo Serafim
Apr 27, 20243 min read
Amazon, from A to Z
Amazon, the name now synonymous with online shopping, began as a humble online bookstore in Jeff Bezos' garage in 1994. Today, it stands...
Marcelo Serafim
Apr 27, 20243 min read
LOST - The Enigma that Changed Television
The crash of Oceanic Flight 815 in 2004 on a mysterious island not only shattered the lives of its survivors but also reshaped the...
Marcelo Serafim
Apr 27, 20244 min read
Exploring Passive Income Streams for Financial Freedom
Imagine a world where your money works for you, even while you sleep. Passive income, the holy grail of financial freedom, makes this a...
Marcelo Serafim
Apr 27, 20243 min read
Cardiovascular Benefits of Everyday Activities: Hidden Workouts in Your Routine
Did you know that you don't need to hit the gym to give your heart a good workout? Many simple everyday tasks and activities can provide...
Marcelo Serafim
Apr 27, 20244 min read
The Olympic Games: A Glorious Tradition of Athletic Excellence
The Olympic Games, widely regarded as the pinnacle of athletic competition, have a rich history dating back thousands of years....
Marcelo Serafim
Apr 11, 20245 min read
Streaming Wars
Exploring Streaming Technologies: A Comprehensive Guide In recent years, streaming technologies have revolutionized the way we consume...
Marcelo Serafim
Apr 10, 20244 min read
Machine Learning and Training Models
Machine Learning and Training Models: A Comprehensive Overview Machine learning has emerged as a transformative technology that enables...
Marcelo Serafim
Apr 10, 20244 min read
Solar Eclipses: A Celestial Spectacle
Solar eclipses, one of nature's most awe-inspiring phenomena, captivate observers with their dramatic display of cosmic alignment. These...
Marcelo Serafim
Apr 10, 20243 min read
Is Free Speech free?
Free speech, often referred to as freedom of expression, is a fundamental human right that allows individuals to articulate their...
Marcelo Serafim
Apr 9, 20243 min read
Understanding Brand Identity
In the competitive landscape of modern business, establishing a strong brand identity is essential for success. Brand identity...
Marcelo Serafim
Apr 3, 20245 min read
Mastering the Art of Cold Calling
Introduction to Cold Calling: Cold calling is an essential aspect of sales and marketing strategies, involving the proactive outreach to...
Marcelo Serafim
Apr 3, 20244 min read
The Royal Family
The British Royal Family is one of the oldest and most enduring institutions in the world, with a history dating back over a thousand...
Marcelo Serafim
Apr 2, 20245 min read
bottom of page