projector. To make a spinner, unbend a paper clip, lay it on the spinner, and put a pencil point inside the clip. Also,
Power Up Game Materials: • Battery cards (six cards per team) • Die • Transparent Spinner Prior to class, copy the spinner onto a transparent sheet so that it can be projected on the overhead projector. To make a spinner, unbend a paper clip, lay it on the spinner, and put a pencil point inside the clip. Also, copy the battery card sheets back-to-back on heavy paper or cardstock. When copying, be sure that the cards align so that the positive value on the front matches the negative value on the back. Cut out the cards. (Alternatively, you can copy the cards one-sided only. This makes the game significantly more difficult.) During class, go over the rules with students. Object: Earn points by lining up your battery cards end-to-end so that the sum equals the target number. The first team to earn 10 points wins the game. Playing the Game: • Divide the class into teams of 2 to 4 students. • Shuffle the cards, and give each team six cards. On one side of each card, the voltage is negative; on the other side, the voltage is positive. • Place the transparent spinner on the overhead projector and spin. The number on which the pointer lands is the target number (the voltage sum). • Your teacher will then roll the die. The number on the die tells you the number of battery cards you must use to obtain the target number. If a 1 is rolled, the teacher will roll the die again. • Your team will be given 20 seconds to create a lineup that equals the target number and that uses the correct number of cards. o If you create a correct lineup in the allotted time, your team earns 2 points. o If your team can not create a lineup in the allotted time, or if you create a lineup with an incorrect total, your team receives 0 points. o If your team creates a lineup with the correct total but the wrong number of cards, you will receive an additional 10 seconds to correct the mistake. If you fix the lineup correctly, your team will receive 1 point. • Once during the game, at any time before the target number is determined and the die is rolled, your team may request a new set of six battery cards. Your team must give the old set to the teacher.
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org
