The Refold method organizes all language learning activities into three pillars: Priming, Interactive Immersion, and Freeflow Immersion. Every activity you do falls into one of these categories, and a balanced approach across all three is what drives acquisition.
Priming is any activity where you're explicitly studying or preparing your brain to recognize something in immersion. The key idea: priming doesn't teach you the language. It prepares you to learn it when you encounter it naturally.
Examples of priming activities: vocab study with Anki or other SRS tools, grammar study, sound study, ear training.
-> See tutorials for all Priming activities
Priming is most effective in short, focused sessions. 10-20 minutes of vocab study is enough — more than that and you hit diminishing returns. The real learning happens when you encounter those primed words and patterns in real content.
Interactive immersion is any activity where you're engaging with real content in the target language and actively working to understand it. "Interactive" means you're stopping, pausing, looking things up, puzzling through sentences, and generally putting in effort to decode the language.
Examples: watching a TV show with subtitles and pausing to look up words, sentence mining, intensive listening (replaying sections to understand), reading with a dictionary, interactive reading with audio.
-> See tutorials for all Interactive activities
This is where the bulk of your learning happens. Interactive immersion is the bridge between priming (knowing a word exists) and acquisition (understanding it automatically). It's mentally demanding — if you're not getting a little tired, you're probably not doing it hard enough.
Freeflow immersion is engaging with content without stopping, looking things up, or actively working to decode. You just let the language flow and focus on the content itself — the story, the information, the entertainment.
Examples: watching a TV show, listening to a podcast, reading a book.
-> See tutorials for all Freeflow activities
Freeflow builds automaticity. It trains your brain to process the language at natural speed, without the crutch of pausing and translating. It also builds stamina and makes the language feel normal rather than like a study exercise.
At low levels, freeflow can feel frustrating because you don't understand much. That's why we recommend starting freeflow with familiar content — things you've already gone through interactively. As your level improves, freeflow becomes the most enjoyable and relaxing part of your routine.
Starting in Phase 4, a fourth category enters your routine: Output.
This includes speaking (conversation, monologuing, reading aloud) and writing (assisted, unassisted, topic writing).
Output isn't technically a "pillar" of immersion learning — it's a separate skill that builds on top of your immersion foundation — but it becomes an important part of your daily routine in later phases.
The proportion of time you spend on each pillar changes as you progress:
| Phase | Priming | Interactive | Freeflow | Output |
|---|---|---|---|---|
| Phase 1 | 30-50% | 50-70% | 0-25% | — |
| Phase 2 | 20-25% | 40-50% | 25-40% | — |
| Phase 3 | 10-20% | 40-60% | 20-50% | — |
| Phase 4 | 10% | 20-30% | 30-40% | 20-40% |
| Phase 5 | 10-15% | 20-30% | 20-30% | 30-50% |
| Phase 6+ | 10-15% | 10-30% | 20-50% | 20-40% |
The general trend: priming decreases over time as you need less explicit study, interactive stays important throughout, freeflow grows as your comprehension improves, and output enters in Phase 4 and grows from there.
Note: This is a rough guideline, not a hard and fast rule.
No single pillar is enough.
Priming without immersion gives you a list of words you can't use. Interactive immersion without priming is painfully slow because you're looking up everything from scratch. Freeflow without interactive gives you vague familiarity without real understanding.
All three work together to build strong abilities from nothing.
The three-pillar framework draws on decades of second language acquisition research. The role of comprehensible input as the foundation for acquisition is well-established in Krashen's (1982) Input Hypothesis and remains central to modern SLA despite ongoing theoretical debates.
The distinction between receptive knowledge (understanding) and productive knowledge (using language) is grounded in the research on implicit versus explicit learning. Schmidt (1990) demonstrated that explicit focus on form helps learners notice patterns in input, which supports the priming pillar's approach. However, research by Ellis (2015) and others shows that form-focused instruction is most effective when integrated with meaning-focused activity — exactly the model described here.
The emphasis on gradually reducing priming and increasing freeflow aligns with skill acquisition theory (DeKeyser, 2015), which describes how language moves from controlled, conscious processing (interactive immersion with pausing) to automatic, unconscious processing (freeflow). Building automaticity through massive amounts of exposure is essential for reaching fluency that feels natural and effortless.