Good teachers have done it forever: before the class reads the text, the class meets the words. Five minutes on la siccità, il raccolto, seminare, and then the article about farming, which suddenly reads like a text with three new words instead of fifteen. Pre-teaching vocabulary is old classroom craft, but it sits on solid research about deliberate word learning, and it is entirely stealable for self-study.
Why it works twice
The first effect is mechanical: pre-learning key words lifts your coverage of the coming text toward the 98% comfort zone (the number is explained in how many words you need), which keeps the reading itself inside the comprehensible input zone instead of turning it into dictionary work.
The second effect is the interesting one. A word you met deliberately ten minutes ago and then encounter in a real sentence gets exactly what memory research orders: a spaced second meeting, in context, with a small act of retrieval (“wait, I know this one”) attached. Nation’s work on deliberate vocabulary learning is clear that explicit study is efficient and durable (deliberate learning is a full quarter of his Four Strands), and it works best precisely when the deliberately learned words promptly reappear in meaningful input. Pre-teaching engineers that reappearance instead of leaving it to luck.
The self-study routine
- Skim first, read second. Before properly reading a chapter or article, scan it and pull out 5–8 unfamiliar words that look load-bearing: words in the title, words that repeat.
- Study them briefly, with sound. Meaning, pronunciation, one example sentence. Two minutes total. Say them aloud; silent vocabulary is half-learned vocabulary.
- Close the list, test yourself. A book-closed check (produce the meanings from the Italian, or the Italian from the meanings) before touching the text. Retrieval, not recognition.
- Now read. Each pre-learned word you meet clicks into place, and the click is the consolidation.
- Tomorrow, the words join your spaced review.
Built in as Le parole di oggi
In 
amo Italian this routine is the standard opening of a lesson: Le parole di oggi presents the day’s key words with definitions and pronunciation before the tappa begins, then runs the check a libro chiuso (book closed, produce the answers) before the texts and exercises recycle those same words. It is the least glamorous feature in the app and one of the most effective, which is roughly the story of vocabulary research in general.
One caution to keep the method honest: pre-learning is a primer, not a replacement for meeting words in context. Ten words studied naked on a list and never met again will decay on schedule. The magic is the sequence: deliberate first meeting, immediate contextual second meeting, spaced third. Set up the sequence and the words stop leaving.
References and attributions: Nation, Learning Vocabulary in Another Language, 2001. The deliberate-learning research summarised is Paul Nation’s; paraphrased with attribution, no original text reproduced. Part of the Science of Learning Italian series.
