Have students work in even-numbered groups to make cards for the spelling words, leaving space on each card to write a sentence or two. Then ask each group to split into two teams. Each team will take half the word cards and write a riddle or a clue for each word. To play, a member of Team 1 picks a card and tells the riddle to Team 2, who try to guess the word and spell it correctly. If Team 2 players succeed, they give a riddle to Team 1.