The model is designed in a spiral, symbolizing the Earth’s interconnectedness, cycles, and continuous evolution. It details the main stages of Earth’s formation from around 4 billion years ago to the present and highlights the unique geological features of Non nuoc Cao Bang Geopark, illustrating fossils, marine sediments, volcanic rocks, minerals, and limestone landscapes. All these traces demonstrate the Earth’s evolution over hundreds of millions of years, inspiring students and helping them better understand the formation of our planet.

The model was made from eco-friendly materials such as foam board, clay, etc. Smart technology, including an Arduino Uno R3 control circuit, music module, infrared sensor, and MOSFET components are combined to offer a diverse and interactive experience. A special feature of the product is its integration into STEM-based teaching activities, fostering students’ critical thinking and presentation skills, and scientific knowledge popularization within the community.

Nguyen Bao Son, a 14-year-old student and the team leader, said “With our passion for scientific research, we created this model to help our peers gain a deeper understanding of the Earth’s formation and the value of Non nuoc Cao Bang Geopark. We hope this model spreads the pride of our homeland and inspires creativity so that students will create more learning products, making education both engaging and meaningful.”

Beyond its educational value, the model also spreads the message of protecting geological heritage, promoting sustainable tourism, and raising community awareness about environmental protection. The model has been used in geography lessons, receiving enthusiastic and curious responses from students. Its impact extends beyond the school, being displayed at public places such as “Kim Dong Walking Street”. Such events help spreading the message of planetary protection to local residents, children, and international visitors.

On May 14, 2025, Vietnam's Party General Secretary To Lam had a small talk with students of Cau Giay Secondary School (Hanoi) which was connected online with students at Hop Giang Secondary School (Cao Bang). During the online exchange, students introduced and shared impressive STEM models, among which the “Earth’s Stratigraphy and Introduction to Non nuoc Cao Bang UNESCO Global Geopark” is one of the highlights. Before this event, the model won Second Prize (the contest did not award a first prize) at the provincial-level Youth and Children’s Innovation Contest organized by the Cao Bang Department of Education and Training and was selected to compete at the 2025 National Youth and Children’s Innovation Contest.

Thanks to the students’ creativity and effort, the “Earth’s Stratigraphy and Introduction to Non nuoc Cao Bang UNESCO Global Geopark” model not only enhances STEM education quality but also opens up avenues for developing suitable educational products that combine theorical knowledge and practice, promoting the geological, cultural, and historical values of Cao Bang while stimulating creativity, learning enthusiasm, and responsibility for preserving the heritage of the region.

Author: Vu Hong Van