The effect of a digital curriculum-based nutrition education intervention on elementary school children’s nutrition knowledge: the Foodbot Factory cluster randomized controlled trial
The Foodbot Factory cluster randomized controlled trial demonstrated that a digital curriculum-based nutrition intervention significantly improved and sustained elementary school children's nutrition knowledge and was more acceptable to students compared to conventional teaching methods, although neither approach altered their already positive nutrition attitudes.
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Every child spends a large portion of their waking life in a classroom, making schools a natural place to teach them how to make healthy food choices. This concept, known as food literacy, involves more than just memorizing facts about vitamins; it is the combination of knowledge, skills, and attitudes that help a person navigate the food environment to choose a diet that supports their health. While schools are required to teach nutrition as part of the standard curriculum, teachers often struggle to deliver these lessons effectively. They face tight schedules, a lack of specialized training, and a shortage of engaging materials that fit perfectly into their daily routine. As a result, the gap between what children are supposed to learn and what they actually absorb can be wide, potentially affecting their long-term health and their relationship with food.
To bridge this gap, a team of researchers in Ontario, Canada, tested a new approach that blends digital technology with traditional teaching. They developed an intervention called Foodbot Factory, which pairs a digital serious game with teacher-led lesson plans. A serious game is a video game designed specifically for educational purposes, where players learn by making choices and seeing the results of those choices in a safe, interactive environment. The researchers wanted to know if this digital method would help children learn and remember nutrition facts better than the standard, non-digital lessons teachers usually use. They also wanted to see if the children found the digital experience more enjoyable, as enjoyment often plays a key role in how well students engage with the material.
The study took place in thirty-two classrooms across the province, involving children in grades four and five, typically aged eight to twelve. The researchers divided the classrooms into two groups. One group used the Foodbot Factory program, while the other group used conventional teaching materials, such as activity sheets and worksheets, which represent the typical "usual practice" in schools. In both groups, a trained teacher led the lessons for about thirty-five to forty minutes each day over five consecutive days. The goal was to ensure that the only major difference between the two groups was the use of the digital game, allowing the researchers to isolate its effect. The children's knowledge was tested at the start of the study, immediately after the five days of lessons, and again four weeks and three months later to see how much they remembered.
The results showed a clear advantage for the group that used the digital intervention. Children who played the Foodbot Factory game and followed the accompanying lesson plans showed significantly greater improvements in their overall nutrition knowledge compared to the children who used the standard worksheets. This difference was not just a temporary spike; the children in the digital group retained their knowledge much better over time. When tested four weeks and three months after the lessons ended, the group that used the game still knew significantly more about nutrition than the control group. Specifically, the digital group showed stronger retention of facts about protein foods, whole grains, and vegetables and fruits. The study found that the digital approach helped children move from knowing about half of the correct answers at the beginning to knowing nearly three-quarters of them by the end, and they held onto that knowledge longer than their peers in the traditional group.
However, the study also revealed where the intervention did not make a difference. The children's attitudes toward nutrition, such as how much they liked healthy foods or how important they thought nutrition was, were already very high before the lessons began. Because the children started with such positive feelings, neither the digital game nor the traditional lessons could significantly change their attitudes. Similarly, the children already knew quite a bit about drinks, so there was little room for improvement in that specific area. This suggests that while the digital tool was excellent for teaching new facts and helping children remember them, it did not need to change how the children felt about healthy eating, as they were already on board.
Beyond the test scores, the children's experience of the lessons mattered. When asked how much they enjoyed the intervention, the children who used Foodbot Factory were significantly more likely to say it was fun compared to those who used the standard materials. This higher level of enjoyment is important because it suggests that digital tools can make learning feel less like a chore and more like an engaging activity, which may encourage children to pay closer attention. The researchers noted that the intervention was designed to be inclusive and accessible, with features like voiceovers and adjustable text sizes to support all learners. The study concluded that combining a curriculum-aligned serious game with teacher-led activities is a superior method for improving and retaining nutrition knowledge in elementary school children compared to conventional teaching methods. It offers a practical, scalable way to support teachers who are often short on time and resources, helping to ensure that children leave the classroom with a stronger foundation for making healthy food choices throughout their lives.
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