At what age can a toddler play "what number comes next"?

From around two, if it is played as a game in the middle of counting rather than as a quiz. Start with what comes after one, two and three — the numbers they hear most — and only add the teens once the early sequence is solid.

My toddler counts "1, 2, 3, 5". Is that a problem?

It is very common and usually temporary. It means the sequence is still being memorised as a whole sound pattern, with a gap. Count together slowly while touching objects, pause before the number they usually skip and let them fill it in, and avoid making the correction the point of the game — hearing the right order matters more than being caught out.

Should I use flashcards with a toddler?

No, not for the sequence. Flashcards build instant recognition of numerals, which is a useful separate skill for a slightly older child, but they do not teach order, counting on, or what a number means. Counting real objects — stairs, spoons, cars — and asking what comes next does all three at once.

What Number Comes Next? Counting Games for Toddlers

"What number comes next?" looks like the simplest question in maths, and it is doing more work than it appears to. Answering it means your child is holding the counting sequence in their head, knows where they are inside it, and can pull out the next item — three things that all have to happen before counting on, adding and place value get easy later.

Play it inside counting, not as a quiz. The trick is to ask the question mid-count rather than out of nowhere. Count the stairs together — "one, two, three… what comes next?" — and keep climbing. Because the game is attached to something happening, your child feels like they are helping rather than being tested, and they will happily play it twenty times a day.

Ask from the middle, not always from one. If you only ever count "one, two, three, what comes next?", your child learns the beginning of the sequence and can be lost at ten. So start in different places: "seven, what comes next?", "let's start at four today." The numbers they hear most are the ones they will own, and starting from the middle is what turns a memorised chant into a number line.

Add one more and one less. Once "what comes next" is comfortable, the two companion questions are "what is one more?" and "what is one less?" Keep them physical: hold up three fingers, then four. If your child is stuck, model the answer rather than pressing for it — "four! one, two, three, four" — and try again later. A toddler learning numbers needs a hundred confident examples far more than one corrected mistake.

Five games that take two minutes each. Count the stairs and stop for the next number. Roll a dice and ask what comes after the number shown. Build a line of toys and ask which toy is in front of the third. Sing a counting song and pause at a random point. Count out spoons for the table and ask how many you will need for one more person — the last one is "one more" with a real reason behind it.

Keep it play, keep it short. Two or three minutes is the whole session for a two- or three-year-old; longer, and the fun drains out and the learning with it. If your child wanders off, that is the signal to stop, not to persist — the game will still work tomorrow.

The stumbles worth knowing about. Skipping a number ("1, 2, 3, 5") is extremely common and usually temporary: the sequence is being learned as one long sound pattern with a gap in it. Count slowly together, pause just before the missing number, and let your child fill it in — and do not make the correction the point of the game, because being caught out is what makes a toddler stop liking the song. Counting the same object twice, or saying two numbers while pointing at one thing, is the one-to-one matching still developing; move each object to the side as it is counted.

Skip the flashcards for now. Flashcards build instant recognition of written numerals, which is a useful skill a little later, but they do not teach order, counting on, or what a number means. Stairs, spoons, fingers and toys do all three at once — and they are already in the house. When you do want the written numbers, put them somewhere real: a numbered chart at your child's height, or numbers on the fridge, and point at them as you count.