If you’ve ever felt like “coding” is too big a word to bring into a kindergarten classroom, I have good news: your students are already coders. They just don’t know it yet! My bachelor’s degree is on “Computer Science” and believe me, I know!

Five year olds build routines, follow steps, and make decisions all day long – and every one of those moments is secretly a coding concept in disguise. My job (and maybe yours too, if you’re reading this) is just to help them notice it.

Here are five coding concepts your kindergarteners already understand, plus simple, no-tech ways from my experience, to bring each one into your classroom.

Concept 1: Algorithm

An algorithm is simply a set of steps you follow, in order to get a result. That sounds technical, but a five year old lives by algorithms constantly, let me explain exactly how.

Ask a student how they make a peanut butter and jelly sandwich, and you’ll get an algorithm without them ever using that word. It will sound something like: open the bread bag, take out two slices, get the peanut butter, spread it, get the jelly, spread it, put the slices together. Miss a step (like forgetting to open the jar) and the whole “program” breaks down! This example reminded me of a very funny and (surprisingly) educational video I show my students every year – the Peanut butter and jelly sandwich exact instructions challenge. Click here to go see the video, it’s amazing!

Try this: Have students draw or act out the steps for a simple daily task – brushing hair, packing a backpack, feeding a pet. Then challenge a partner to follow their exact steps, in the exact order. If a step is missing or out of place, the “program” won’t work, and that’s the perfect moment to talk about why order matters in coding.

Concept 2: Sequence

Sequence is really the heart of an algorithm – it’s the idea that the order of steps matters and changing that order changes the outcome.

A favorite classroom book is a great way in. Read a story with a clear beginning, middle, and end, then hand students picture cards from the story and ask them to put the cards back in the correct sequence. When they get it right, point out that they just “read the code” of the story!

Try this: If you’re looking for something ready-made to practice this exact skill, this Clicker the Cat story timeline freebie is a great low-prep option. Students cut and glue seven key events from the book “Clicker the Cat” into the correct order on a timeline worksheet, which is a perfect, concrete way to practice sequencing while also touching on some digital citizenship themes. It’s completely free, only needs two printed pages plus scissors and glue, and works well even if you haven’t read the book yourself, just use the read-aloud link in the teacher notes.

Concept 3: Loop

Loops are all about repetition and doing the same thing again and again until you’re told to stop.

Kindergarteners live inside loops every single day without realizing it. Walking to specials class, eating a sandwich, showering, the calendar routine each morning, the clean-up song at the end of centers – all of these repeat on a schedule, just like a loop in a computer program repeats until a condition tells it to stop.

Try this: Pick a classroom routine that repeats daily (like your morning meeting) and have students list its steps. Then ask: “How many times a week do we run this loop? What would make us stop early?” That second question introduces the idea of a loop’s stopping condition in language they already understand.

Concept 4: Decomposition

Decomposition means breaking a big task into smaller, more manageable steps, which is exactly what young learners need to do with almost everything new they attempt.

Ask a student to explain how to tie a shoe and they’ll likely jump straight to “you just tie it!” Push a little further and you’ll uncover all the smaller steps hiding inside: cross the laces, make a loop, wrap the other lace around, pull it through, tighten. Breaking down “tie your shoe” into those smaller pieces is decomposition in action.

Try this: Choose a task that feels simple to an adult but has many hidden steps (washing hands is a great one, or making a cup of tea) and have students break it into as many small steps as they can. The more steps they find, the better they’re practicing this skill.

Concept 5: Branch (If/Then thinking)

Branching means making a decision based on a condition, like “if this happens, then I do that.”

Walk students through a normal school day, step by step, then introduce a twist: “But what if it’s raining at recess – what happens then?” or “What if you forgot your lunchbox – what do you do?” These “what if” questions are branching statements, and five year olds are naturally great at answering them because they navigate small decisions like this constantly.

Try this: Play a simple “if/then” game as a class. Call out a condition (“If it’s your birthday…”) and have students supply the “then” (“…then we sing the birthday song!”). It’s silly, it’s fast, and it’s genuine branching logic.

Bringing it all together

The beautiful thing about introducing these five concepts – algorithm, sequence, loop, decomposition, and branch – is that you don’t need a single device, robot, or screen to teach any of them. You just need everyday classroom moments and a little bit of coding language layered on top of what your students are already doing.

Once they’ve got these ideas down through unplugged play, kids move into screen-based or robot-based coding so much more easily, because the underlying logic already feels familiar to them.

Want it all done for you?

If you’d rather not build these activities from scratch, I’ve put together resources in my TPT store, Technology Realm Resources, that walk your students through exactly these concepts using unplugged, screen-free activities. Here’s some links:

• Unplugged Algorithm Coding Drawing and Crafting Bundle – a full set of hands-on, no-screen activities that teach algorithms, sequencing, and a bit of computational thinking through drawing and crafting. It’s a great fit for bringing these exact concepts to life with primary and elementary students.
• Algorithm Drawing Exercise Book – if you just want a quick, ready-to-print option, this exercise book walks students through 14 algorithm tasks in a block-coding style, no devices required.

Both are zero-prep, low-cost ways to turn today’s blog post into tomorrow’s lesson plan. Happy coding, teacher friends!