Here’s a small exercise with your child’s practice book. Pick any multiple-choice question. Ignore the right answer — look only at the three wrong options. Ask of each one: which child, thinking what, would pick this?
In most books, there’s no answer. The wrong options are filler — an answer that’s obviously absurd, a random number, a word from the same chapter. Nobody would pick them for a reason. And an option nobody picks for a reason isn’t testing anything; it’s just standing there making the question look like a question.
This matters more than it seems, because of what a question is actually for. The right answer tells you one bit: the child got it, or didn’t. But a wrong answer — chosen from options built with care — can tell you exactly what went wrong in the child’s head.
Take a child multiplying decimals who answers that 0.4 × 0.2 = 0.8. That’s not a random miss. It’s the fingerprint of one specific belief: multiplication makes numbers bigger — a belief that served them faithfully for years of whole numbers and has now quietly expired. A question with 0.8 sitting among the options is a trap in the best sense: the child who holds the old belief walks into it, and the moment they do, you know precisely what needs fixing. Not “weak in maths.” One expired idea, one targeted repair.
So there are really two kinds of practice question. One kind checks whether the child can produce the right answer. The better kind also listens — each wrong option is the signature of a specific wrong idea, so whichever way the child answers, the question returns information. A miss stops being a small failure and becomes a pointer.
We’ve written before that a book is a teacher who cannot hear your child — it can’t watch their face, can’t ask a follow-up. This is the closest a book can come: questions built so that the child’s answer speaks. When we write practice, every wrong option must earn its place by tracing back to a real, named wrong idea — the ones children actually hold, in that chapter, at that age. If we can’t say which child would pick an option and why, the option gets replaced. A wasted option is a wasted chance to listen.
There’s a quieter benefit, too. Questions built this way are honest in a way that filler-option questions are not. When wrong options are absurd, a child can score by elimination — the question flatters everyone and finds nothing. When the wrong options are the actual wrong ideas, a right answer means something: the child came to the fork where the old belief lives, and took the correct road.
So if your child gets a practice question wrong, resist the tally. Ask instead what the wrong answer was — because in a well-built question, which wrong answer is the whole story. The mark counts the miss. The option names the fix.