In today's rapidly evolving world, it is crucial/vital/essential to empower/cultivate/nurture future generations with the skills and knowledge necessary to thrive/succeed/excel. STEM education plays a pivotal/fundamental/key role in achieving this goal by providing students with a strong foundation in mathematics, science, technology, and engineeri

Before modern classification systems, scientists struggled to the known elements. One early attempt was made by Johann Wolfgang Döbereiner, a German chemist who observed a striking pattern among certain groups of elements. He proposed that three elements with similar characteristics could be grouped together as triads, forming the basis for his fa