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EP3 Classroom: From a Can of Soda to Understanding the World of Density

May 11, 2026Learning

The lesson begins with student curiosity: why do some soda cans sink while others float? Why does an egg sometimes sink in water, but float at other times? Can adding salt to water really make objects float?

EP3 classroom exploring density concepts

Discovery Through Observation

Through observation, comparison, and hands-on experiments, students gradually discovered that the key factor behind floating and sinking is density.

Experimental Activities

Students progressed from observation to active experimentation by mixing salt water and sugar water with different concentrations, carefully recording changes, and analyzing results.

Observation and experimental processes

The Rainbow Lab

The most exciting activity involved the Rainbow Lab, where students colored sugar water solutions of different densities and slowly poured them into test tubes. As the colorful liquids settled, they discovered that liquids with different densities naturally form separate layers.

The Rainbow Lab activity with colored sugar water solutions

Rainbow-like layers formed by liquids of different densities

Core Educational Approach

Rather than teaching facts directly, MGA's methodology emphasizes student-led discovery.

"Throughout this process, students were not simply being taught facts. Instead, they continuously asked questions, tested hypotheses, and refined their understanding."

The academy's philosophy centers on helping students discover patterns and principles for themselves, rather than simply memorizing answers.

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