These flash cards are great in helping students remember the first 20 elements of the Periodic Table, something that is required of them at my school in 8th grade. *It comes in handy when they go to high school!
The flashcards include the element name, symbol, atomic number, and electron configuration. I use these in my classroom on game days and make them into decks of cards. Students like to play go fish, spoons, and "bologna sandwich" (BS) with them. I also make them available to my students for use at home - where they usually play more subdued games like matching.
Just cut out and they're ready to use! I like to make several colors of decks to keep things organized.