computer science

Pencil Code (programming language)

Pencil Code (programming language) is a computer 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 Pencil Code (programming language) rather than just read about it. In short: Pencil Code is an educational programming language and website. It allows programming using Scratch-style block coding or CoffeeScript.

Key takeaways

Pencil Code (programming language) belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Pencil Code (programming language) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Pencil Code (programming language) from memory before moving on to harder problems.

Reference excerpt

Pencil Code is an educational programming language and website. It allows programming using Scratch-style block coding or CoffeeScript. Code runs directly in the web browser and can be shared with others. The language centers on a model of a pencil programmatically drawing on a 2-dimensional screen, with the pencil cursor visually depicted as a turtle. A 2019 study by Deng et al. in an eight-week teaching intervention comparing text-based and block-based environments found that students learning in a mixed environment had improved confidence and computational thinking.

History Pencil Code was created by David Bau and his son in 2013. It was inspired by Logo, the 1967 programming language for drawing on a screen using a Lisp-like programming language. Google has funded improvements to Pencil Code via Google Summer of Code projects.

References

External links Pencil Code official website Common Sense Education page

Worked examples

Example 1 — a first encounter with Pencil Code (programming language)

Start with the simplest possible case. Write down what Pencil Code (programming language) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer 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 Pencil Code (programming language) 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 Pencil Code (programming language) 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 Pencil Code (programming language)

In research: Pencil Code (programming language) appears in computer 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 Pencil Code (programming language) 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: Pencil Code (programming language) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Domain-specific programming languages, Educational programming languages, Free educational software, so understanding it makes those chapters shorter.
In everyday life: Look for Pencil Code (programming language) 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 Pencil Code (programming language) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pencil Code (programming language) 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 Pencil Code (programming language) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pencil Code (programming language) in simple terms?

Pencil Code is an educational programming language and website. It allows programming using Scratch-style block coding or CoffeeScript.

Why does Pencil Code (programming language) matter?

Because it connects several computer 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 Pencil Code (programming language)?

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 Pencil Code (programming language).