In design · Working memory

Cairn Memory™

For ages 3 to 6 · Working memory: the mental sticky-note that reading, math, and following directions all lean on.

Age 3Age 4Age 5Age 6

Illustration for Cairn Memory

Remember-and-find games that gently stretch how much a little mind can hold at once.

The science

Working memory is the small amount of information a child can hold and use in the moment. It is the workspace behind following a two-step instruction, sounding out a word without losing the first sound, or keeping a number in mind while you count on. Cairn Memory trains it with remember-then-find games that grow with the child.

Baddeley's model splits working memory into a visual-spatial sketchpad and a verbal loop, both managed by a central control system. Young children's spans are short and grow steadily across these years, and that growth predicts later reading and math more strongly than almost anything else we can measure early.

The skill maps directly onto the kind of tasks the WPPSI assessment uses (Picture Memory, Zoo Locations), but we are building the muscle, not coaching the test.

Crucially, working memory improves with the right kind of practice: short, playful, and just past comfortable, then backed off when it gets frustrating. Calm by design is not a slogan here, it is how memory actually consolidates.

The research

Baddeley's working-memory model. Cowan on memory span in childhood. WPPSI-IV working-memory subtests.

By age, and how to do it at home

Here is what is developing at each age, what Cairn Memory does about it, and a way to build the same skill at home. The home column is the real point: even if your child never opens the app, you can do this. The best early learning has always been a parent and a child and a little knowing-what-to-try.

3years old
What's developing

Holds one or two things in mind, and loves finding something hidden a moment ago.

What the game does

Two-card matches, things that hide and reappear, very short remember-and-find.

Try this at home

Peekaboo grown up: hide a toy under one of two cups and let them find it.

4years old
What's developing

Follows a two-step instruction and remembers a short list with a little help.

What the game does

Three- and four-card matching, simple “where was it” grids.

Try this at home

Give two-step jobs: “put the cup in the sink, then bring me your shoes.”

5years old
What's developing

Holds several items and starts to rehearse them to remember, the first sign of a strategy.

What the game does

Longer match grids, short sequences to repeat back, find-what-changed puzzles.

Try this at home

Play “I went to the shop and bought...” adding one item each turn.

6years old
What's developing

Juggles a few pieces of information at once and updates them as things change.

What the game does

Sequences to remember and reorder, and remember-while-you-do-something-else challenges.

Try this at home

Card games like Memory and Go Fish. Real cards, real turn-taking, real memory.

No reviews yet, on purpose. When real children have actually played it, their reactions go here. We do not buy reviews, run review farms, or invent five-star quotes. That this is unusual tells you something about the rest of the shelf.
Cairn Memory

In the workshop.

This game is on the bench, built one at a time and only shipped when it clears all six of our promises. The science and the at-home guide above work today, with or without the app. Want to know when it lands? hello@playcairn.com.

See the whole library

The pedagogy behind every Cairn game is written in plain language and cited. Questions, or a researcher who wants to argue with us? hello@playcairn.com.