Play as the Highest Form of Research

By KiddLab | #staycuriouswithkiddlab

Albert Einstein once said: "Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world." He was describing, in essence, what play does — and why he called it the highest form of research.

Most people hear the word "play" and think of something children do before the real learning starts. Recess. Downtime. A break from the work. But what if that instinct is exactly backwards?

Einstein didn't call play the highest form of leisure. He called it the highest form of research. And the more we understand about how the brain learns — at any age — the more that single line reads less like a charming quote and more like a scientific claim.

What Play Actually Does to the Brain

Play isn't the absence of learning. It's one of its most powerful delivery mechanisms.

When children engage in open-ended, exploratory activity — building something, acting something out, trying something and failing and trying again — their brains are doing something quite specific. They're testing hypotheses. They're building mental models. They're learning how things work by interacting with them directly, rather than being told about them from a distance.

Play-based interventions in early childhood settings produce measurable gains in self-regulation, cognitive control, and social-emotional development — outcomes that structured academic instruction alone often struggles to replicate (Bodrova, Leong, & Yudina, 2023). Children who learn through play don't just absorb content. They develop the capacity to think.

And crucially, this isn't a phenomenon limited to young children.

Play Doesn't Stop Working When You Grow Up

Adults learn through play too — we've just stopped calling it that.

When a professional takes on a new challenge, experiments with an unfamiliar approach, or works through a problem by sketching it out, role-playing a scenario, or building something from scratch, that's play. The mechanism is the same. The brain engages more deeply when there's agency, curiosity, and genuine stakes involved — when the learner is an active participant rather than a passive recipient.

Students who deliberately introduce playful, exploratory elements into how they engage with material show higher levels of engagement, better retention, and improved academic performance — an effect that holds across age groups (Bakker, Costantini, & Scharp, 2025). Play, it turns out, isn't something you age out of. It's something many of us are simply trained to suppress.

This has real implications for how we think about education at every stage — not just in the preschool years, but through primary school, secondary school, and into adult learning and professional development.

Why Structured Play Requires Skill — From Educators Too

Here's a part of the conversation that often gets missed: play-based learning isn't just good for learners. It makes better educators.

Teachers trained to incorporate structured play into their sessions didn't just improve outcomes for their students — they reported higher levels of engagement and creativity in their own teaching practice (Lu et al., 2024). The process of designing good play-based learning requires genuine intellectual engagement from the educator. You can't phone it in.

This matters because the quality of a learning experience depends enormously on the person facilitating it. A skilled educator working within a playful framework isn't stepping back — they're doing more. They're planning intentionally, reading the room in real time, asking the right questions, and knowing when to step in and when to let discovery happen.

In playful learning environments, teachers move through four key phases: planning, orientation, playing, and elaboration — and within those phases, the most effective educators don't just observe. They become co-players. They model curiosity. They stay genuinely interested in what emerges (Li & Kangas, 2024).

That's a high standard. And it's exactly the kind of educator KiddLab looks for.

Small Groups Make Play Possible

There's one more piece to this.

Structured play — the kind that produces real learning outcomes — requires something most classroom settings can't offer: the space for each learner to actually participate. To ask questions. To make mistakes without an audience of thirty peers. To be guided by an educator who can actually see what they're doing and respond to it.

With four learners in a session, that space exists.

The educator can notice when a learner is stuck and quietly offer a different angle. They can follow an unexpected line of curiosity and let the session go somewhere genuinely interesting. They can give each child the kind of individual attention that turns a guided activity into a real discovery.

This is why KiddLab keeps its groups small. Not because it's a nice idea — but because the research is clear that the conditions for genuine learning require it.

Einstein was describing something real. Play, at its best, is how curious minds of any age test ideas against reality, build understanding from the inside out, and develop the kind of knowledge that doesn't wash away after the test is over.

It's not a break from learning. It's what learning looks like when it's working.

#staycuriouswithkiddlab

References

Bakker, A. B., Costantini, A., & Scharp, Y. S. (2025). Playful study design: A novel approach to enhancing student well-being and academic performance. Educational Psychology Review, 37(2), 1–42. https://doi.org/10.1007/s10648-025-10022-6

Bodrova, E., Leong, D. J., & Yudina, E. (2023). Play and self-regulation: Lessons from Vygotsky. Frontiers in Psychology, 14, 1034633. https://doi.org/10.3389/fpsyg.2023.1034633 | PubMed: https://pubmed.ncbi.nlm.nih.gov/37077852/

Li, X., & Kangas, M. (2024). A systematic literature review of playful learning in primary education: teachers' pedagogical activities. Education 3–13. https://doi.org/10.1080/03004279.2024.2416954

Lu, J., et al. (2024). Professional development programmes on playful learning for early childhood teachers: a systematic review. Teachers and Teaching, 31(8), 1351–1376. https://doi.org/10.1080/13540602.2024.2404081