What it is: Reviewing words/phrases at increasing intervals (1 day → 3 days → 7 days…). What it’s for: Move vocabulary into long-term memory efficiently. Example: Review “make a decision” today, then 2 days later, then 1 week later.

• If you remember → next review later
• If you forget → review sooner

• Collocations: “pay attention”
• Example sentences (better than single words)
• Pronunciation notes (IPA) if needed

• Add max 10 new cards/day
• Prefer phrases, not isolated words

• *interval* /ˈɪntəvəl/: khoảng thời gian giữa các lần
• *long-term memory* /ˌlɒŋ ˈtɜːm ˈmeməri/: trí nhớ dài hạn
• *overload* /ˈəʊvələʊd/: quá tải
• *isolated* /ˈaɪsəleɪtɪd/: đứng riêng lẻ