penguen.io Blog

Tips, tricks, and science-backed methods for rapid language learning.

Feb 19, 2026 • 15 min read Featured

Flashcard and Spaced Repetition

Remember cramming for an exam, acing it, and then forgetting everything a week later? There's a science-backed method that lets you remember more by studying less, and it all starts with a simple flashcard.

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May 24, 2024 • 12 min read

The Science of Spaced Repetition: How to Never Forget a Word Again

Discover the neural mechanisms behind long-term memory and how penguen.io uses algorithmic timing to optimize your vocabulary retention. We dive deep into the Ebbinghaus Forgetting Curve and modern cognitive science.

Feb 22, 2026 • 18 min read

English Vocabulary Flashcards: The Complete Guide to Learning Words That Stick

Discover how English vocabulary flashcards can transform your language learning. Learn science-backed strategies, top tools, and tips to memorize words faster.

Feb 25, 2026 • 20 min read

How to Prepare for IELTS Vocabulary With Flashcards: A Step-by-Step Plan

Learn how to prepare for IELTS vocabulary with flashcards. This step-by-step plan covers study strategies, word lists, and tools to boost your band score fast.

Feb 28, 2026 • 22 min read

The 100 Most Important IELTS Vocabulary Words (With Flashcards)

Master the 100 most important IELTS vocabulary words with flashcards. Organised by topic with examples, definitions, and a study plan to boost your band score.

Mar 03, 2026 • 19 min read

English Flashcards for Beginners: A1 and A2 Vocabulary With Examples

Start learning English with beginner flashcards. This guide covers essential A1 and A2 vocabulary with examples, study tips, and a simple plan to build your first 200 words.

Mar 06, 2026 • 24 min read

B1 English Vocabulary: 200 Intermediate Words to Reach the Next Level

Level up your English with 200 essential B1 intermediate vocabulary words. Organised by topic with examples, collocations, and a study plan using spaced repetition flashcards.

Mar 09, 2026 • 25 min read

B2 English Vocabulary: 200 Upper-Intermediate Words for Fluency

Advance your English with 200 essential B2 upper-intermediate vocabulary words. Organised by topic with examples, collocations, and a study plan using spaced repetition flashcards.

Mar 09, 2026 • 24 min read

100 Essential PTE Academic Vocabulary Words (With Flashcards)

Master 100 essential PTE Academic vocabulary words with flashcards. Organised by task type with definitions, examples, and a spaced repetition study plan to boost your PTE score.