This Slides activity challenges students to label and identify the first 20 chemical elements on the Periodic Table. The post actually contains FIVE assignments or variations all-in-one.Assignment/slide #1 is a drag-and-drop with draggable options (name, symbol, and proton or atomic number, slide/variation #2 contains draggable options (name and symbol only), slide #3 contains draggable options (name only), slide #4 includes clickable text boxes and a word bank, and slide #5 includes the clickab