 Today, we are going to play Function War. This game provides a fun way to build familiarity with and review representations of functions. The goals of this game include finding different representations of the same function and building your familiarity with representations of functions. To play this game, you will need the linear functions set of ugly functions cards and depending on the variation, sticky notes and a pencil or pen. Deal out the cards evenly to all the players. To familiarize yourself with the cards, complete the pregame activity as follows. For each linear function, work together to find the four corresponding cards that represent the function. Group them together and explain how you know they match. Each linear function has four cards. There are 12 groups of four cards each in the set. Context cards serve as wild cards in the game. You can play a faster variation as explained at the end of this video. If you choose the variation, write the linear function of each contact card on a sticky note and attach the sticky note to its context card. Now we can begin gameplay. This game is similar to the classic game, War. On the count of three, all players flip the top card on their deck face up in the center. Each player will determine the y-intercept, x-intercept, slope, or absolute values of these values for all linear functions in play. The first player to state the category and explain why this value is greater than the values in the same category on other players' cards wins the cards for that round. Gameplay continues in this way. The player on the left would see that their y-intercept is going to be zero, but the player on the right's y-intercept is going to be negative two. So they would call y-intercept and get the cards. The player on the left would see that their slope is three, while the player on the right's slope is negative five. So they could call slope and win the cards for this round also. If you incorrectly state a category or value, you forfeit your cards for that round. Context cards trigger bonus rounds. If a context card is played, the first player to find an equation to model the card wins the cards that round. If more than one context card is flipped at a time, the winner of the round is the first player to find an equation to model one of the context cards. If the context card played matches any other flipped up card in play, each player must surrender one extra card to the winner of that round. If you recognize that two non-context cards represent the same function, you must call function war. After explaining why the functions are the same, you automatically win all the cards played that round. To win, a player must win all the cards in the deck through the rounds of function war. Questions to think about during or after gameplay could be, which values are easier or harder to recognize in each representation of the function? What strategies helped you quickly find y-intercept, x-intercept, and slope of the functions? The information about a function is readily evident from each type of representation. A few variations to this game include double war and pre-solve context cards, choose a goal, and levels. Feel free to pause the video to read the variations.