This is the fifth post in the Playful Thinking series, exploring Harvard Project Zero’s Visual Thinking Routines and how they can make learning more purposeful, more playful, and more powerful for every learner.
That One Time The Oceans Changed Color
We were at the end of our solar system unit in science. Students had just completed an I Used to Think / Now I Think — writing down what they believed before the unit, and what they actually believed now. Their thinking was on the page. Real, specific, sometimes surprising even to themselves.
Then I asked them to pair up and share — not their opinions, not a summary of the unit, but something they genuinely appreciated that their partner had learned.
The room shifted.
There were me too moments — two students discovering they had both let go of the same misconception, nodding at each other with something that looked a lot like understanding. There were oh really? moments — quiet surprise at where someone else’s thinking had gone. And then, from somewhere in the room, this:
“The oceans were different colors. Even red — once.”
An oh YEAH moment. The kind where you can feel the whole class lean in slightly, recalibrating. Because it is true — Earth’s oceans have been green, red, pink, and purple across billions of years of history, only settling into the blue we know today relatively recently in geological time.
That fact had stuck with one of the scientists. Their partner had just remembered it too. And now, through one pair conversation, the whole room knew it.
That is Think Pair Share at its best, acting as an amplifier — for thinking that was already real, already specific, already theirs.
What Is Think Pair Share?
Although it is included in this series as a visible thinking routine, and listed on the project zero website, Think Pair Share has been around longer than Project Zero’s Visible Thinking initiative. In fact, Think Pair Share was created by Professor Frank Lyman at the University of Maryland in 1981 — originally designed to give more students a genuine chance to respond not just the fastest hand in the room. It gives learners ‘think time’.
In the forty-plus years since, it has been adopted by nearly every major educational framework going: Project Zero built it into their Visible Thinking collection, Kagan wove it into his cooperative learning structures, Marzano referenced it in his research on classroom instruction. It shows up in teacher training programmes, professional development workshops, and curriculum guides across every subject and age group worldwide.
Most teachers have heard of it. Many use it regularly. Yet, a surprising number have never been told what makes it actually work — or what makes it quietly fall apart.
Three words. Three steps. More moving parts than almost anything else in this series.
How Think Pair Share Works
The structure is straightforward. You pose a question or prompt. Students take a few moments to think independently — ideally with a real response forming before anyone speaks. Then, when directed, they turn to a partner and talk. Then some of those pairs share their thinking with the wider group.
That is it. That is the whole routine.
What makes it powerful is what happens inside each of those three steps — and what you, the teacher, are doing while they unfold.
The Think phase might be the most important. It is not filler time while you wait for the pairs to start. It is the moment when quieter learners, or the ones that need just a bit more time to contemplate their answer — get to form a real thought before anyone else speaks. This routine protects that time. As teachers, we must resist the urge to fill the silence. The silence has work to do.
The Pair phase can be where magic happens — or where things can go sideways. More on both of those in a moment.
The Share phase is often the weakest link. When pairs report back, the energy might drop, and then it feels like a slightly more complicated version of hands up. Yet it is also an opportunity for students to learn from one another and build community.
The CI Connection
For language learners, whole-class discussion might feel high stakes. Your thinking is public, your language is on display, and the window to speak opens and closes fast. For a learner who is still building vocabulary and confidence, that window might as well be a wall.
The pair phase changes that. Two people, low volume, low stakes — a genuinely safe place to try out language before it goes public. The sentence frames of TPS — *I think… because… My partner thinks… We both noticed…* — are language scaffolds as much as thinking scaffolds. Used repeatedly, across units and topics, they become acquired structures.
And there is something else. When learners know that anyone might be called on to share — not just the talker, but the listener too — the pair conversation becomes purposeful. Both people need to understand. Both people need the language to express it. That shared accountability is quietly one of the most powerful comprehensible input conditions you can create. They help each other out.
Honesty: When It Goes Wrong
As wonderful as this routine can be, Think Pair Share can go completely sideways, and it is worth talking about.
One partner talks. The other nods politely and waits for it to end. Two students sit in uncomfortable silence, each waiting for the other to go first. Or — my personal favourite — they are deep in animated conversation about something that has nothing to do with the lesson.
However, rather than failures of the routine, they are signals about the conditions, and they happen to me, too.
The pair that goes off topic? Sometimes that is actually fine — let it run a moment, then redirect. The pair in silence? They may need a sentence frame, a clearer prompt, or simply a different partner. The pair where one person disappears? That is a pairing problem, and it is on me to fix it.
Which brings us to pairs.
The Pairing Problem — and My Confession
In order to be perceived as fair, many teachers use popsicle sticks, playing cards, role dice, or pick names from a hat for pairings. However, I will be honest with you about ‘random’ pairing: I cheat.
Not always. And not obviously (hopefully – though learners are SMART). My preferred method is a deck of playing cards — one card per student, handed out at the start of class. It *appears* completely random. Learners are given a card, find their partner by matching something on that card: the value, suit or colour. They may be asked to form small groups by that information as well. One deck, four different grouping options, lots of flexibility.
Spencer Kagan spent decades researching cooperative learning and landed on a principle: strategic grouping works best when learners cannot see the strategy. I borrowed that idea and made it my own. I set the deck up in advance — I know exactly who is holding which card. The randomness feels fair; the structure underneath is deliberate enough to protect the thinking.
When a sharp-eyed learner spots the pattern — some do, and honestly, good for them — I smile, acknowledge it, and start a new deck. An upgrade I am working on for the future: use card sleeves with a permanent name and a colored paper insert on the back, which means I can reshuffle the hidden groupings any time without replacing the cards.
The full system — including how I use cards and MultiSided Dice dice for grouping too — is over here: Playing Cards & Multi Sided Dice
Is that cheating? A little. Is it good teaching? I think so.
The goal is never randomness for its own sake. The goal is the pairings and the thinking it can support. Sometimes we need to quietly protect the conditions for that thinking to happen — and a well-engineered deck of cards is one of my favorite ways to do it.
Making the Share Phase Come Alive
Here is a move that keeps the share phase fresh: *tell the class what your PARTNER said, not what you said.*
Not “here is my thinking.” “Here is what my partner was thinking.” Suddenly the listener has to listen. Suddenly the pair conversation has a real purpose beyond forming one’s own ideas — both are responsible for understanding someone else’s ideas or the answer to the question they were meant to think about.
A few other moves that help:
Think Pair Share Square. Pairs share with another pair before anything goes to the whole class. Now everyone has heard at least two perspectives, tested their thinking against someone else’s, and refined their ideas before they have to speak in front of the whole class. The share phase becomes a conversation between people who are already warmed up.
The dice roll. I tell learners before the pair phase begins: anyone might be called on, and you are responsible for knowing what your partner thinks, not just what you think. Then I roll. The accountability is real — and they know it. What this does to the quality of the pair conversation is interesting. This is sort of an **Accountability Roulette** Anyone might be called on, and everyone is responsible for ensuring their partner’s has an answer, not just their own. Watch what happens to the quality of the pair conversations when learners know this. Watch the listeners lean in.
No repeats before everyone shares. I track who has spoken. I draw from different tables. Nobody shares twice before everyone has shared once. It takes a bit of quiet organisation on my part, but learners notice — and it sends a clear message that everyone’s thinking matters in this room. I also want learners to feel that our classroom is a safe space, and that I have given them the chance to prepare themselves before the sharing starts.
The Playful Twist
Think Pair Share is one of the more naturally social routines in this series — but here are some ways to turn up the dial.
Yes, And Storytelling
Give pairs a story starter connected to your unit — *“A scientist opened the lab door and found…”* — and ask them to build the story together, one sentence at a time, yes-and style. No blocking, no vetoing, just building. The constraint of having to accept your partner’s contribution and extend it is genuinely playful — and it produces the kind of collaborative thinking that surprises both partners. The pairing phase is extended to give partners time to build their story together. At the end, pairs share their story openings with the class. The variety is interesting and fun.
The Fishbowl
After the think time, one pair has their conversation in the center of the room while everyone else watches. The observers are not passive — they have a job: notice and share what kinds of thinking moves the pair is making. Are they agreeing? Challenging? Building? After the fishbowl pair finishes, the observers share. This is metacognition dressed up as theatre. I tend to take volunteers to be the pair in this instance.
Role Cards
Before the pair phase, each partner draws a card: Questioner (your job is to ask, not tell), Builder (your job is to extend and add to what your partner says), Devil’s Advocate (your job is to find the holes), Observer (your job is to observe the others and share at the end). The roles create productive friction. They also take the pressure off — if you are the Devil’s Advocate, you are not being difficult, you are doing your job. This is particularly useful for learners who find disagreement uncomfortable.
The Spin
Use a wheel, dice, or a deck of cards for pairing — with the caveat that the teacher reserves the right to a quiet intervention when a pairing would genuinely not serve either learner. Most of the time, let fate work. Unexpected pairings are often the best ones. But you are the teacher. You know your room.
Why It Belongs in Every Classroom
Think Pair Share works in language class. It works in science. It works in history, maths, PE, art — anywhere you have a question worth thinking about and more than one learner in the room.
Every subject has its language. Every discipline has its ways of talking about ideas. When learners have protected time to think, a safe space to try out language with one person before the whole room hears it, and a structure that holds everyone accountable — that is when the thinking gets good. That is when the learning grows.
Three steps. Forty-plus years. Still working.
.Try It Yourself
Pick a question from whatever your class is working on right now. Something genuinely worth thinking about — not a recall question, but something with real room for interpretation or opinion.
Give learners two minutes of quiet think time. Pair them — randomly, strategically, or somewhere in between. Tell them before they start: anyone might be called on, and you are responsible for knowing what your partner thinks.
Then listen to the room while they talk.
Notice the pairs that build something together. Notice the ones that go quiet. Notice what the energy tells you about the prompt, the pairing, and what your learners actually know.
The share phase will take care of itself — especially if you roll the dice.
If something unexpected, funny, or genuinely surprising comes out of it — I would love to hear about it in the comments. And if you are an audio learner, come find me on YouTube.
Thanks for being here. I hope your day is full of play
Maureen | Playful Pedagogy
[playfulpedagogy.com](https://www.playfulpedagogy.com) | [YouTube](https://www.youtube.com/@PlayfulPedagogy)
Next in the series: Headlines — distilling big ideas into sharp statements – often in 6 words or less.