Pencil Code is a collaborative programming site for drawing art, playing music, and creating games. It is also a place to experiment with mathematical functions, geometry, graphing, webpages, simulations, and algorithms. Programs are open for all to see and copy.
Watch a video overview or watch a video tutorial.
The main language is Coffeescript. Professional software engineers use Coffeescript to build complex websites, but Coffeescript code can also be very simple.
Pencil Code can also be used to explore and learn Javascript, HTML, and CSS: when you are ready, just find the "gear" button to adjust languages.
Programs preload the pencilcode library to use turtle graphics functions. Pencil Code is all open source. Hang out on the Pencil Code discussion forum or check out the quick reference or the online guide to find out more. There is also an illustrated Pencil Code book with more than 100 small projects.
Anybody can save programs and web pages, but read the Terms of Service and the Privacy Policy first. Two rules:
Be Nice. Do not mess up other peoples' work. Do not post content that detracts from education on the site. This a learning space that is not locked down (for example, passwords are optional). So feel free to explore, create, and link, but also please be considerate.
Be Careful. Do not depend on Pencil Code to keep your data safe. Data posted here is public, and data is not secured from loss. Do not post private or personally identifiable information. Passwords on Pencil Code do not prevent malicious interference.
The Pencil Code Foundation is devoted to advancing computer science education by making programming as simple and as universal as using a pencil. Contribute to the development of Pencil Code at dev.pencilcode.net or github. — .
Mia sat in the corner of a café watching students hunched over practice tests. She remembered the bright faces the first time she’d taught IELTS: hopeful, determined, trusting the test to be fair. Over years she’d noticed the same tricky patterns—ambiguous paraphrases, misleading distractors, and passages reused across test publishers. The exams were supposed to measure English ability; instead, occasional sloppy wording determined scores.
She sketched an idea on a napkin: crowdsourcing which answer choices real test-takers selected for official IELTS Reading sections. If enough people submitted their answers tied to identifiable test forms, patterns would emerge—questions that consistently confused readers, distractors that lured fluent but inattentive candidates, and possibly errors in official keys.
Below are the answers to the most frequently asked questions about this passage. These correspond to Matching Headings, True/False/Not Given, Summary Completion, and Multiple Choice questions.
Statement 5: Traditional mapping was faster than crowdmapping before 2010.
Answer: False
Explanation: Paragraph A says official information was "slow" – implying crowdmapping was faster. Crowdmapping Ielts Reading Answers
Statement 6: The Ushahidi platform was created specifically for the Haiti earthquake.
Answer: False
Explanation: Paragraph B states it was a Kenyan-born platform used after creation, not made for Haiti.
Statement 7: In Libya, false reports were mostly accidental.
Answer: False
Explanation: Paragraph C explicitly says "deliberately uploaded false coordinates."
Statement 8: Triangulation completely eliminates errors in crowdmaps.
Answer: Not Given
Explanation: The text says triangulation "can filter out inaccuracies" but does not claim 100% elimination. Mia sat in the corner of a café
Task: Complete the summary below using words from the box.
Text Context: The summary usually describes the reaction to the Haiti earthquake.
"Following the earthquake in Haiti, rescue teams faced difficulties because existing maps were outdated. Volunteers used _______ to create new digital maps. This process allowed for the rapid _______ of crucial infrastructure such as roads and hospitals. While some critics worry about ________, the sheer volume of contributors helps correct errors quickly." Below are the answers to the most frequently
Likely Answer Bank:
Analysis: