Using word families can help teach beginning spellers that words contain and share patterns. Use this word family list to introduce the sound of words ending with -ACK. Words: back, hack, Jack, lack, pack, rack, sack, tack, Zack, sack, black, crack, knack, quack, snack, stack, track, whack, flack, shack, slack, smack, attack, backpack. Printing options: full color and black lines.