Why Johnny can't add
Explore Why Johnny can't add by Morris Kline: 6 Hacker News mentions from 5 participants in 2007-02-22–2026-11-01. Read original excerpts, compare opinions and save this book.
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Read on Hacker NewsThis record preserves its author, date and source link. Open HN to read the full context.
Read on Hacker NewsThis record preserves its author, date and source link. Open HN to read the full context.
Read on Hacker NewsThis record preserves its author, date and source link. Open HN to read the full context.
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