LATEST LESSONS
New lessons are added almost every week. Check out the most recent lessons on The Blue Tree. Which one looks practical, interesting, or inspiring?
Emotional Intelligence by Daniel Goleman
What makes a truly great leader? It is not just intelligence — it is the ability to understand yourself and the people around you. Explore the four domains of emotional intelligence in this lesson.
The 6 Skills AI Will Never Replace by Daniel Pink
What does it take to stay relevant when AI can do almost everything? Daniel Pink has some surprising answers.
The Power of Mindmaps
Explore how thinking evolves from information to intelligence, and learn why creativity, focus, and meaningful connections matter more than data.
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LIST OF CATEGORIES
There are 20 main categories, or subjects, of lessons on The Blue Tree. First five are about the English language, the next ten are about general interest, and last five relate to personal development.Â
MY ENGLISH DICTIONARY
Add new and interesting words from this lesson to your English dictionary.
Store your words and expressions in this handy dictionary. You can create groups and play games based on your entries. There is also a practical importing feature.
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chronological catalogue
Browse through all the lessons using this chronological catalogue of lessons.Â
Emotional Intelligence by Daniel Goleman
What makes a truly great leader? It is not just intelligence — it is the ability to understand yourself and the people around you. Explore the four domains of emotional intelligence in this lesson.
The 6 Skills AI Will Never Replace by Daniel Pink
What does it take to stay relevant when AI can do almost everything? Daniel Pink has some surprising answers.
The Power of Mindmaps
Explore how thinking evolves from information to intelligence, and learn why creativity, focus, and meaningful connections matter more than data.
The Power of Vulnerability by Brene Brown
Vulnerability. One of the most appealing and powerful concept in psychology. Dive deep into what it means and how it can make you a better person.
Talking Point – Memory
This Talking Point lesson deals with memory, remembering and forgetting. It offers a lot of speaking practice and some practical vocabulary.
Fighting Workaholism: You are not a Success Machine
This lesson explores workaholism, success, and identity, helping you reflect on ambition, balance, and what defines a meaningful professional life.
How to talk about parties and partying
Learn how to talk about parties and partying, especially in the context of the New Year’s Eve.
Winter of the century
This lesson is based on an article about the winter of the century in Poland in 1978.
Talking about dreams, hopes, ambitions and plans
Learn how to talk about your dreams, hopes, ambitions and plans. Useful grammar and vocabulary presented in a fun and engaging way.
Hofstede – The Culture Factor
Learn how to talk about culture using the Hofstede Culture Factor and its six dimensions.
National Differences
This lesson celebrates national differences. You will learn from it why it is critical to understand that our way of doing things is not the only way. There is also a neat poll inside.
How to set and achieve goals
Learn why it is critical to set clear goals and how harmful are vague goals. It’s the first of a series of lessons on setting and achieving goals.
What’s behind the Ozempic fad
Explore how Ozempic is reshaping health, habits, and society — a clear look at its real benefits, hidden risks, and long-term impact.
Toys vs screens
This lesson discusses the impact of screens on the way children play and the value of toys.
How to criticise people
Practise collocations for criticising people, like slippery customer or pick a fight, and learn to use them naturally in everyday situations.
Tips for handling disagreements
Learn simple, practical strategies to handle disagreements and turn arguments into constructive conversations.
Idioms with parts of the body
Learn 35 practical idioms with parts of body and use them to discuss everyday topics.
You need to be bored
Boredom can spark creativity and deeper thinking. In this lesson, discover why giving your mind a break from constant phone use is a hidden gift.
Speaking Cards – Breaking the ice
Use this lesson to get to know each other better. It contains 50 discussion questions that are perfect for a friendly conversation.
Language of recommending, suggesting and giving advice
Test Your English series – this test checks the language of recommending, suggesting and giving advice.
40 rules for life
Daniel Pink’s 40 rules for life is a special lesson. It’s a wonderful and insightful collection of advice on life that we’d all do well to follow.
Secrets of Adulthood
Simple truths for our complex lives. This lesson is based on a book by Gretchen Rubin.
Managing up
How can an employee manage their bosses? They need to learn how to manage up. That’s what this lesson is about.
Black Box Thinking
Mistakes can be our greatest teachers – if we learn from them. Black Box Thinking shows how embracing failure leads to real progress. Are you making the most of your mistakes?
So you want to be an architect – part 1
Learn what it means to be an architect from Doug Patt. Did you know that an architect is also an inventor?
Leverage Points – How to get unstuck in work and life – Dan Heath
Learn six ways you can fix what is not working well according to Dan Heath, the author or Reset: How to Change What’s Not Working.
Idioms with brain and mind and left-right brain dominance
This lesson teaches some cool idioms with brain and mind and explores the topic of left-right brain dominance.
Testujemy Metody – Comparative and superlative adjectives
SPECIAL LESSON – Test six ways of learning grammar. Become an expert at creating and using comparative and superlative adjectives.
Why we work so much
Why do we work so much? What can history of work ethic teach us about the reasons for our busy working lives?
Talking Picture – Goals
Let’s talk about goals. Answer some questions about setting goals and study a few model answers.
MY ENGLISH DICTIONARY
Add new and interesting words from this lesson to your English dictionary.
Store your words and expressions in this handy dictionary. You can create groups and play games based on your entries. There is also a practical importing feature.
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