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English Learning Blog

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

Articles

May 25, 2026 12 min read

Phrasal Verbs vs Prepositional Verbs: What's the Difference? (With Audio)

Phrasal verbs use an adverb particle and are often separable. Prepositional verbs use a preposition and are inseparable. Four practical tests, clear examples, audio pronunciation, and a comparison table.

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May 15, 2026 3 min read Milestone

Thank You for 1,000 Users on penguen.io

A short note of gratitude as we cross our first major milestone. What 1,000 users means in practice, what's coming next, and a real thank you to everyone who got us here.

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May 15, 2026 20 min read

The 100 Most Essential TOEFL Vocabulary Words (With Definitions and Examples)

The complete list of the 100 highest-leverage TOEFL words, organized into 8 academic categories with part of speech, definition, and a TOEFL-style example sentence for each.

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May 15, 2026 15 min read

The 7 Best Free Vocabulary Apps in 2026 (An Honest Comparison)

We tested Anki, Quizlet, Memrise, Duolingo, Drops, Vocabulary.com and penguen.io. What's actually free, what's paywalled, and which one to pick by use case — with a free-tier coverage chart.

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May 15, 2026 18 min read

The 100 Most Common English Phrasal Verbs (With Meanings and Examples)

Master the 100 highest-frequency English phrasal verbs. Each one with a clear meaning and a real example sentence — organized by particle (up, out, on, off, in, down, back, over) for fast recall.

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May 14, 2026 14 min read

How Many Words a Day Should I Learn? The Science-Backed Answer

Research-backed daily vocabulary targets by CEFR level, a realistic 30-day plan, and why learning 10 words a day will beat learning 50.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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