46 47 47 48 48 5 4 3 2 1 TACKLING FOOTBALL WITH STEM 4 THE SCIENCE BEHIND FOOTBALL 12 FOOTBALL TECH ENGINEERING FOR SAFETY 20 38 32 TABLE OF CONTENTS A GAME OF NUMBERS GLOSSARY ONLINE RESOURCES MORE INFORMATION INDEX ABOUT THE AUTHOR
Quarterback Tom Brady prepares to receive the snap from the center
1 CHAPTER TACKLING FOOTBALL WITH STEM It's a crisp autumn day The crowd is whipped into a frenzy and cheerleaders are doing flips on the sidelines The quarterback barks out the signals and the center snaps the ball setting all 22 players on the field into motion The players on the line of scrimmage collide with each other Their protective gear makes crunching popping and smashing sounds
