This 4 stages minimum 3 hours STEAM program for 3rd-grade students explores how to clean dirty water using natural materials like sand, gravel, and charcoal. Students develop critical thinking by making guesses and testing which material layers filter the water most effectively. Teams practice problem-solving and design thinking skills by building their own models and fixing designs that do not work at first. The activity builds collaboration and a sense of wonder as students work together to find solutions for a global environmental problem. Through planning, experimentation, observation, and reflection, learners experience how design thinking and scientific reasoning can be applied to environmental problems. The activity emphasizes problem-solving, collaboration, sustainability awareness, and creativity, while making abstract global issues tangible and age-appropriate. Children improve their communication skills through drawing and discussion, where they explain their observations and what they learned.

Brief description of the STEAM program

In this STEAM activity, teachers guide third-grade students in exploring the real-world challenge of clean water access and water pollution through hands-on engineering and inquiry-based learning. Students design, build, and test a simple water filtration system using natural and everyday materials such as sand, gravel, and activated charcoal. Through planning, experimentation, observation, and reflection, learners experience how engineering thinking and scientific reasoning can be applied to environmental problems. The activity emphasizes problem-solving, collaboration, sustainability awareness, and creativity, while making abstract global issues tangible and age-appropriate.

Age group/ Grade	Student numbers	Duration	Number of stages	Subject(s)
3rd-grade students	Whole class (max. 30 students)	minimum 4 x 45 minutes	4 stages	design and technology, visual arts, science studies, mathematics