science

Let's Do It! World

Let's Do It! World is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Let's Do It! World rather than just read about it. In short: Let's Do It World is a global civic organization that started from Estonia, mobilizing people worldwide in joining local, national and regional clean-up events. Among other projects, it is the founder of World Cleanup Day, on which a network of 180 countries, with over 21.2 million participants took place in 2019.

Key takeaways

Let's Do It! World belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Let's Do It! World to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Let's Do It! World from memory before moving on to harder problems.

Reference excerpt

Let's Do It World is a global civic organization that started from Estonia, mobilizing people worldwide in joining local, national and regional clean-up events. Among other projects, it is the founder of World Cleanup Day, on which a network of 180 countries, with over 21.2 million participants took place in 2019. First time in 2024 World Cleanup Day mobilises millions in its first year as a UN International Day. The Let's Do It! organization was first conceived in Estonia in 2008, where a country clean-up action called Let's do it! (in Estonian: "Teeme ära!") cleaned up 10000 tons of illegal waste by more than 50000 volunteers in one day. Following Estonia's lead, many countries also started their own country clean-up events. Let's Do It! World is an accredited member of the United Nations Environment Programme (UNEP). Since 2017, the movement uses the hand gesture W sign, aka "Three Fingers Up," as its symbol.

History On 3 May 2008, over 50000 Estonians came out of their homes to clean up Estonia in an event called Let's Do It 2008. People at home could follow the process via media channels. The idea spread from Estonia to other parts of Europe and beyond. Next spring, in 2009, Latvia and Lithuania cleaned their countries with more than 250000 people participating and have done it henceforth for three years, engaging more people each year. On 20 March 2010, Portugal cleaned their country with 200000 people. Slovenia followed shortly, breaking all records with 270000 people (which is 13% of the overall population of the country) taking part in the action. In the beginning of June the same year, Kyiv, the capital of Ukraine was cleaned. By the end of 2011 more than 2.5 million people had participated in Let's Do It! cleanup actions in 16 countries – Estonia, India, Slovenia, Serbia, Finland, Romania, Latvia, Lithuania, Portugal, Bulgaria, Moldova, Ukraine, Cambodia, Russia, Hungary and Brazil.

World Cleanup 2012 In 2012, starting from 24 March until 25 September, a series of cleanups happened around the globe, on all continents, bringing together millions of volunteers in 96 countries. The action was initiated on 24 March 2012 by volunteers in Estonia, Slovenia and Portugal. To bring together doers and initiators and share existing experience – Let's Do It! teams were organizing workshops and regional gatherings, introducing the World Cleanup 2012 around the world. Each group or organisation was leading the cleanup action in their country.

World Cleanup Day After a successful World Cleanup 2012 project, the network set more ambitious goals. During the Let's Do It! Clean World Conference held in Pristina, Kosovo on 6–9 February 2014, it was agreed, that the aim of the global movement is to clean up the whole world from illegally dumped solid waste and to keep the planet clean. To reach this goal, the leaders of country cleanups set the ambitious goal to involve 380 million people by 2018. According to Let's Do It! World, this is around 5% of the world's population and is estimated to be the amount to create a lasting change. This resulted in the first World Cleanup Day on 15 September 2018. Around 18 million people in 157 countries took part in this global cleanup effort. It has been organized annually since then.

Prize 2017: European Citizens' Prize 2018: The UNESCO-Japan Prize on Education for Sustainable Development

See also National Cleanup Day Voluntary ecological year

References

External links

Official website Official Youtube Channel Video about Let's Do It! Estonia Video about the global action - Let's Do It! World

Illustrations

Worked examples

Example 1 — a first encounter with Let's Do It! World

Start with the simplest possible case. Write down what Let's Do It! World claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Let's Do It! World before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Let's Do It! World ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Let's Do It! World

In research: Let's Do It! World appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Let's Do It! World in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Let's Do It! World is common in secondary-school and first-year university syllabi. It links to neighbouring topics Environmental organizations based in Estonia, Environmental volunteering, Organizations established in 2008, so understanding it makes those chapters shorter.
In everyday life: Look for Let's Do It! World outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Let's Do It! World in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Let's Do It! World means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Let's Do It! World out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Let's Do It! World in simple terms?

Why does Let's Do It! World matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Let's Do It! World?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Let's Do It! World.