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?
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.
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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
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chronological catalogue
Browse through all the lessons using this chronological catalogue of lessons.Â
How To Write a Business Plan
Would you like to have your own business? Maybe you already have one. What are the rules of preparing a good business plan? What should you consider putting in there?
How Ads (and People) Persuade You
How to build a resilient future using ancient wisdom
Did you see the pyramids? Or the Roman aqueducts up close? It turns out there are many ancient technologies that are successfully used by people all over the world today.
What makes a hero?
Winning the Story Wars
How could veganism change the world?
The best place to be a woman?
Czy kobiety w Polsce zarabiają tyle samo, co mężczyźni na podobnych stanowiskach? Z czego wynika różnica w wynagrodzeniu? Czy jest jakieś miejsce na świecie, gdzie ta różnica jest najmniejsza?
Developing a Growth Mindset with Carol Dweck
Would you like to learn if you have a growth mindset or a fixed mindset? Watch Carol Dweck’s TED talk and find out the power of yet.
Football Fanatics
How to make work-life balance work
The Economist Essentials: Public Debt
Have you got any pet hates
How to work with someone who bugs you
General English in Social Situations
How to talk about stress
Why some of us do not have one true calling
The Best Juice Recipe for Fat Loss and Health
The CURE to Social Media Addiction
New York City vs London
Japanese designer Oki Sato on his playful approach to design
20 English words to talk about something big
What happens if you cut down all of a city’s trees
Homer Simpson: An economic analysis
Arnold Schwarzenegger Shows His Gym & Fridge
Learn Present Continuous Tense
Language of Colours
Be Professional! Never say this at work!
Learn what not to say at work and what to say instead in this lesson based on Emma from mmmEnglish.

































