The Cambridge English Speaking Test: How to Prepare for a Paired Exam
Cambridge Speaking tests use two candidates and two examiners. The format from KET to CAE, working with your partner, and practice you can do at home.
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The development log of StudyX: app updates, how-to guides, and notes from building mobile software for intelligence.
Reading Japanese Without Spaces: How to Find Where a Word Ends
Japanese has no spaces between words. Four clues for finding word boundaries, the places where they fail, and how to select a word for the dictionary.
Does Extensive Reading Help with IELTS, TOEFL and TOEIC?
What research says extensive reading does, which parts of IELTS, TOEFL and TOEIC it helps with, what it leaves out, and how to split time before a test.
Digital Piano or Keyboard: Choosing a Child's First Instrument
Digital piano or keyboard for a child's first instrument? What to check: keys, key weight, pedals, headphones, iPad connection, space and used ones.
Living with Two Eyes: The Basics of Life and Death in Go
What it means for go stones to live or die, starting from two eyes: why one eye is not enough, false eyes, vital points of common shapes, seki, tsumego.
How to Read Chess Notation: What e4, Nf3 and Qxf7# Mean
How to read e4, Nf3 and Qxf7# in chess books, following the FIDE Laws: square names, piece letters, capture and check symbols, castling, promotion.
How to Read Tsume Shogi Solutions: โฒโณ, ๅ, ๆ, ๆ and ไธๆ
How to read the Japanese notation in tsume shogi answers, such as โฒ5ไบ้ๆ โณๅ็: squares, โฒโณ, ๅ, ๆ, ๆ and ไธๆ, with the Western equivalent like G*5b.
Every Sudoku Has One Answer: Unique Solutions and the 17-Clue Minimum
A sudoku is made to have exactly one answer. How that shapes solving, the 2012 proof that 16 clues are never enough, and how clues relate to difficulty.
Adding with Logic Gates: The Half Adder as a Puzzle
How AND, OR and NOT can add numbers, starting from one-digit binary sums: sum and carry tables, building XOR, half and full adders, and puzzles to try.
How to Teach Division with Remainders
How to teach division with remainders at home: sharing with counters, why the remainder is less than the divisor, checking, and word problems.