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 STEM disciplines. Through engaging activities/p

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