Lessons

Hello,

Hello My Dear Learner!

It’s great to see you here, on The Blue Tree. It means that you – like me – enjoy learning about the world, people and ideas.

There’re hundreds of lessons waiting for you to explore. Use the simple or interactive search tools to find something interesting. You can also browse through the catalogue of lessons below.

Please remember that I am here to help you. If you need any help or if you find a bug or mistake, let me know at hi@thebluetree.pl

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LATEST LESSONS

Check out the latest lessons added to The Blue Tree.

5 questions to guide your career choices

5 questions to guide your career choices

Are you on the right path professionally? Check out these five questions to guide your career choices. This lesson is based on Harvard Business Review management tip.

List of Subjects

Browse through the subjects.

Business English

Business
English

English grammar

English
grammar

Everyday English

Everyday
English

Tests and Quizzes

Test &
quizzes

Learn more words

Learn more
words

Culture

Culture

Entertain Yourself

Entertain
Yourself

Health and fitness

Health &
fitness

Wise Quotes

Wise
quotes

Science stuff

Science
stuff

Surprise me

Surprise
me

The Arts

The Arts

Travelling and nature

Travel &
Nature

What do you think

What do 
you think

Man and
Society

Better Communicator

Better
communicator

Better Writer

Better
writer

How to learn

How to
learn

Learn from TED.com

Learn
from TED

Personal Productivity

Personal
productivity

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MY 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. 

Add new and interesting words from this lesson to your English dictionary.

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Chronological Catalogue of Lessons

Look through the chronological catalogue of all the lessons on The Blue Tree.

5 questions to guide your career choices

5 questions to guide your career choices

Are you on the right path professionally? Check out these five questions to guide your career choices. This lesson is based on Harvard Business Review management tip.