STEM has never been so much fun! Kids can play rock bingo, mineral memory, gem-tac-toe, trivia, and have a full deck of playing cards that can also be used as flash cards. In addition to all the fun games, kids will also receive 25 rock specimens and over 150 rock, mineral, and gemstone specimens. The rocks and gems serve as game pieces, but also make a fun addition to any rock collection! This kit has game boards, instructions, a specimen bag, and 52 playing cards with fascinating facts about the rocks and gems in the kit. The cards can be used in trivia, as flashcards, or as part of any traditional card game.