Preschoolers Who Play Like Engineers Show Big Gains in Problem-Solving, Study Finds

A new study suggests that when preschoolers spend their days building, testing, and tinkering, the benefits reach far beyond the classroom. Researchers at Bursa Uludağ University in Türkiye report that an eight-week program of play-based STEM activities—science, technology, engineering, and mathematics delivered through structured play—produced significant improvements in young children’s problem-solving abilities, with some of the largest gains appearing in how children handled problems involving materials and everyday objects. The findings, published in the Early Childhood Education Journal, add to a growing body of evidence that the foundations of scientific thinking are laid long before formal schooling begins, and that play may be the most natural vehicle for laying them.

The research team, led by Gül Yılmaz with Salih Çepni serving as supervisor, took a deliberately two-pronged approach. The study used what methodologists call an explanatory sequential mixed-methods design: first, quantitative measurements were taken to determine whether the intervention changed children’s problem-solving skills at all; then, semi-structured interviews with the children, their parents, and the classroom teacher were conducted to explain how and why those changes occurred. This combination matters because a test score alone cannot capture whether a child who solves a puzzle faster is also more persistent, more curious, or more willing to collaborate—qualities that parents and teachers observe daily and that standardized instruments often miss.

The intervention took place in a public preschool, where nineteen children formed the experimental group and sixteen children served as the control group. Over eight weeks, the experimental group engaged in play-based STEM activities designed to embed engineering-style design challenges and scientific exploration into ordinary play. The control group followed the standard preschool curriculum. To measure outcomes, the researchers used the Problem-Solving in Science Education Scale, a validated instrument that assesses how children approach and resolve problems across different domains, including problems involving the use of materials and problems related to science and nature. Comparing the two groups before and after the intervention allowed the team to isolate the effect of the play-based STEM program from normal developmental progress.

The quantitative results were striking. Children in the experimental group showed statistically significant improvements in problem-solving abilities compared with their peers. The effect sizes—a statistical measure of how large a difference is, not merely whether it exists—were large for material usage problems and for total scale scores, and medium-to-large for science and nature problems. In practical terms, effect sizes of this magnitude indicate that the changes were not marginal statistical artifacts but substantial shifts in how children approached challenges. For a relatively short intervention of eight weeks, delivered to children still learning to sit still for a story, the magnitude of the gains is notable and suggests that early childhood may be a particularly responsive window for cultivating problem-solving skills.

The qualitative strand of the study painted a picture that numbers alone could not. When researchers interviewed the children themselves, they found that the young participants genuinely enjoyed design-based activities—the open-ended challenges that ask a child to imagine a solution, build it, watch it fail or succeed, and try again. Perhaps more telling, the children demonstrated persistence when facing challenges, returning to difficult tasks rather than abandoning them. This willingness to struggle is a hallmark of what developmental psychologists call executive function and what educators often describe as grit, and its emergence in preschoolers through play is consistent with theoretical work by scholars such as Alison Gopnik, who has argued that young children’s play resembles the hypothesis-testing of working scientists.

One of the most intriguing findings was what happened at home. The interviews revealed that children transferred their learning beyond the preschool walls, applying problem-solving strategies and engineering-style thinking to situations in their home environments. Transfer of learning—taking a skill acquired in one context and deploying it in another—is notoriously difficult to achieve in education, and its appearance in four- and five-year-olds suggests that play-based STEM activities tap into something fundamental about how young children encode and generalize knowledge. Parents, for their part, reported enhancements across cognitive, social-emotional, and motor domains, indicating that the developmental ripple effects of the program extended well beyond the problem-solving skills the researchers set out to measure.

The classroom teacher’s observations reinforced this holistic picture. According to the study, the teacher highlighted increased curiosity, creativity, and teamwork among the children participating in the STEM play activities. These outcomes align with a long tradition in developmental theory. Jean Piaget’s constructivist account of cognitive development holds that children build knowledge through active manipulation of their environment, while Lev Vygotsky’s sociocultural theory emphasizes that learning is fundamentally social, scaffolded by interactions with more capable peers and adults. Play-based STEM education, in this light, is not a novelty but a natural synthesis: it places children in socially rich, hands-on environments where cognitive challenge and joyful exploration coincide.

The study was not without its difficulties, and the researchers were candid about them. Implementation challenges included time constraints—the perennial obstacle for preschool teachers juggling multiple curricular demands—initial difficulties with teamwork, as children unaccustomed to collaborative design had to learn to share materials and negotiate ideas, and the limited sustained attention that is simply developmentally normal for young children. These hurdles are important for curriculum designers to understand, because they suggest that successful play-based STEM programs require not just well-designed activities but also realistic scheduling, explicit support for collaboration skills, and activities calibrated to short attention spans. The findings echo earlier research noting that early childhood educators often report low confidence in teaching STEM subjects, making professional support a critical ingredient.

The broader context gives the findings added urgency. Around the world, policymakers have identified early STEM education as a strategic priority, and organizations such as the Joan Ganz Cooney Center have argued in influential reports that STEM learning must begin in early childhood rather than waiting for middle or high school. In Türkiye, where the study was conducted, the Ministry of National Education’s updated preschool curriculum has incorporated STEM content, and industry groups have called for expanded STEM capacity. Yet questions have persisted about whether formal STEM instruction is developmentally appropriate for preschoolers, or whether it risks imposing school-like structure on children who learn best through play. This study’s answer is that the dichotomy is false: when STEM is delivered through play, it amplifies rather than supplants the developmental work of early childhood.

The implications reach teachers, parents, and curriculum designers alike. For educators, the study offers evidence that guided play with clear STEM goals—what researchers have called guided play, where curricular objectives meet playful pedagogy—can yield measurable cognitive gains. For parents, the finding that children carried their problem-solving home suggests that everyday moments of building and tinkering with a caregiver may reinforce classroom learning. And for curriculum designers, the results argue for embedding engineering design challenges into early childhood programs while building in time for collaboration and attention-friendly pacing. As the authors conclude, play-based STEM education holds real potential to promote holistic development in the earliest years—a stage when, as decades of developmental science have shown, the brain is most malleable and the appetite for exploration is at its peak. The study received no external funding, and the authors declare no competing interests.

Subject of Research: Effects of play-based STEM education on problem-solving skills and development in preschool children

Article Title: Play-Based STEM Education in Early Childhood: A Mixed-Methods Study on Problem-Solving and Developmental Outcomes

Article References: Yılmaz, G., & Çepni, S. (2026). Play-Based STEM Education in Early Childhood: A Mixed-Methods Study on Problem-Solving and Developmental Outcomes. Early Childhood Education Journal. https://doi.org/10.1007/s10643-026-02362-x

Image Credits: AI Generated

DOI: 10.1007/s10643-026-02362-x

Keywords: STEM education, early childhood, play-based learning, problem-solving skills, preschool, mixed methods, child development, engineering design, guided play, curriculum design, social-emotional development, educational research