Step by step means one stage at a time, in order. You use it when something is done in sequence without skipping stages: explaining instructions, learning a skill, solving a problem. Before a noun, the phrase takes hyphens: a step-by-step guide.
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verb + step by step; step by step, + clause; a step-by-step + guide/plan/approach
- Our new manager explained the refund process to us step by step.
- I'm learning to cook Thai food step by step, starting with simple curries.
- The app gives you a step-by-step guide to setting up your account.
What changed
First versionCould you explain the new booking system by steps?
RevisionCould you explain the new booking system step by step?
By steps might seem a natural way to say “in stages”, but English doesn't use it. You need the fixed form step by step: the same word twice with by between them, no article and no plural.
Little by little is also about gradual change, but without separate stages: something changes a bit at a time, often without anyone noticing. The days got longer little by little: they grew longer on their own, and step by step doesn't fit here.
Your turn
The recipe looks hard, but it's easy if you follow it ___: first the sauce, then the pasta, then the cheese.
Show the answer
step by step — You follow the recipe in stages and in a set order, which is exactly step by step. One by one is about several people or things taking turns. Here it refers to a single recipe, and you can't follow one recipe “one by one”.
Write about a skill you're learning now. Name the skill and the first step you started with.
I'm learning to swim step by step, and my first step was putting my face in the water without panicking.
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