When 9-Year-Olds Decided to Protect Factory Workers: Grade 4 Projects at Keystone's Idealoom SLC

At Keystone International School, learning doesn't stop at the classroom door. For our Grade 4 learners, it began at a sand casting foundry, where they witnessed firsthand the gruelling conditions faced by industrial workers every single day.

What they saw didn't just inform them. It moved them. And that empathy became the engine behind two remarkable student-led innovations presented at our annual Student-Led Conference.

Meet Key Air Kare and Extrotasker, two projects, two sections, one powerful shared mission: making workplaces safer for the people who need it most.

This is project-based learning and inquiry-based learning at their finest, where real problems meet young, determined minds.

The Problem That Started It All

Sand casting is one of India's oldest manufacturing processes. But behind the finished metal products lies a harsh reality, workers are exposed daily to silica dust, extreme heat, and harmful fumes. Prolonged exposure leads to serious respiratory diseases, and many workers have little to no protection.

When Grade 4 learners from Keystone visited a sand casting unit in Sanathnagar, Hyderabad, they didn't just observe, they asked questions, felt concern, and came back to school determined to find solutions. This kind of real-world immersion is central to the Cambridge curriculum philosophy of connecting learning to life.

Project 1: Key Air Kare | Grade 4 Kalam

Conceptualized and executed by learners of Grade 4 Kalam

From Observation to Action

After their field visit, the Grade 4 Kalam team dug deeper. They conducted a case study involving 100 foundry workers, analysing health risks and representing their findings through graphs and data, bringing in genuine STEAM thinking long before most students encounter it formally.

They consulted an industry expert who walked them through the dangers of silica dust, worker safety norms, and the need for energy-efficient solutions. Armed with this knowledge, the students moved into the ideation phase, sketching protective masks, cooling systems, tongs, exhaust mechanisms, and more.

Their Solution: An Automatic Air Purifying & Cooling Exhaust System

After rounds of design thinking, prototyping, and refinement, the team arrived at their final solution, a portable, automatic air purifying and cooling exhaust system specifically designed for foundry workers.

What makes it stand out:

• Portable and detachable, easy to move around the work area

• Flexible exhaust pipe, adapts to different workstation setups

• Temperature sensor integration, responds to heat levels automatically

• Solar-powered potential, eco-friendly and cost-effective

• Affordable and scalable, designed with small industries in mind

This wasn't a theoretical exercise. Students built a working prototype, presented it at the Student-Led Conference, and explained its mechanism, features, and future enhancements, including the possibility of full solar integration.

The Learning Behind the Innovation

The IB curriculum encourages learners to be caring, principled, and open-minded. Key Air Kare is a living example of all three. These young learners developed genuine empathy for foundry workers, applied scientific reasoning to a human problem, and collaborated to bring a solution to life, skills that no textbook exercise alone can build.

Project 2: Extrotasker, Grade 4 Miyawaki

Conceptualized and executed by learners of Grade 4 Miyawaki

Seeing the Problem Up Close

The Grade 4 Miyawaki team also visited the sand casting unit in Sanathnagar, watching sand mould preparation, the pouring of molten metal, and the intense heat and dust that workers navigated without adequate protection. Their expert interaction with Mr. Mohit Saxena further deepened their understanding of ventilation, safety standards, and the need for practical, affordable solutions for small-scale industries.

Their Solution: EXTROTASKER

"One device, safer lives."

The Miyawaki team designed the Extrotasker, a smart, sustainable ventilation device engineered to tackle three workplace hazards simultaneously: heat, fumes, and dust.

Their ideation journey was thorough and wide-ranging, exploring protective gear, cooling mechanisms, smart helmets, safety shields, and multi-functional exhaust systems before arriving at their final concept.

Key features of the Extrotasker:

• Sustainable, designed with long-term environmental impact in mind

• Portable, easy to deploy across different work areas

• Automated, operates without constant manual intervention

• Economical, affordable for small and medium industries

• Durable and safe, built to withstand industrial environments

The device removes hot air, eliminates harmful fumes, and reduces dust, creating a significantly safer breathing environment for workers.

Presenting with Confidence

At the Student-Led Conference, the Miyawaki team delivered idea pitches, prototype demonstrations, and visual presentations, clearly articulating the problem, their solution, and its real-world relevance. Watching 9-year-olds explain ventilation mechanics and industrial safety to an audience of parents and educators is a testament to what inquiry-based learning truly looks like in practice.

What These Two Projects Tell Us About Education at Keystone

Both projects followed the same powerful arc, observe, empathise, research, ideate, build, present, which is the heart of the Design Thinking Process and a cornerstone of both Cambridge curriculum and IB curriculum frameworks.

But beyond frameworks and methodologies, what stands out is this:

These children cared. They cared about people they had just met. They cared enough to spend weeks researching, designing, and refining solutions for workers whose names they may never know. And that quality, empathy translated into action, is perhaps the most important thing a school can cultivate.

At Keystone International School, we call this approach Idea Loom, a learning philosophy where students weave together curiosity, creativity, collaboration, and real-world problem-solving into something genuinely meaningful.

Key takeaways from both projects:

• Empathy is a skill, and it can be taught through experience

• Young learners are capable of serious innovation, when given the right environment

• STEAM is most powerful when it serves a human purpose

• Field visits and expert interactions transform classroom learning into something unforgettable

• Collaboration and critical thinking grow when students work toward goals that matter to them

Admissions Are Now Open

If you want your child to grow into a thinker, a problem-solver, and a compassionate innovator, Keystone International School is where that journey begins.

Our learner-centred approach draws from the best of the Cambridge curriculum and IB curriculum, with project-based learning and inquiry-based learning woven into every grade, from the earliest years through secondary school.

👉 Explore Admissions, Seats are filling up for the upcoming academic year.

👉 Want to know more? Get in touch with us, we'd love to welcome you to our community.

Keystone International School, Hyderabad, Where every learner is a changemaker.