... sold and checks the answer.30Guess and CheckM ATERIALS 92 paperpencil 2 playersc07.qxd 10 /25 /04 10 :21 AM Page 92 First, try any two numbers whose sum is 20 0.Start with 100 adult tickets and ... pencil 2 sheets of paper 2 mailing labels 2 envelopes 2 stampsstopwatch 2 players c07.qxd 10 /25 /04 10 :21 AM Page 944. Now, using a stopwatch, Player 1 times how long it takes Player 2 to stuffa ... circles, and tradegraphs in a fast-paced game of creating and solving graphing word problems.97VIIIG EOMETRY AND G RAPHINGc08.qxd 10 /25 /04 10 :24 AM Page 97c08.qxd 10 /25 /04 10 :24 AM Page...