Twisted Forces Beth Kappus, Frank Gulla, and the MathScience Innovation Center Physical Science Team. Developed with funding from the MathScience Innovation Center Major Understanding When two objects interact they exert forces on each other that may affect the motion of the objects. The effect of different forces on an object’s motion can be observed using both a hand-held pinball game and a hand-held video golf game. A gyroscope in the video game is used to sense motion caused by the transfer of energy from the player to the game cartridge. Grade/Subject Grade 4; Energy and Motion, Physical Science. Objectives Investigate force and motion using a handheld pinball game. Investigate Newton’s laws of motion using the Nintendo® Game Boy® Advance SP system and WarioWare™ Twisted Game cartridge. Observe forces that change the motion of objects. Identify energy transformations and the energy of motion Identify applications of this technology in everyday things. Collect and display experiment data in graph form Time Anticipatory Set Activity: Mechanical Pinball Activity: Mega Micro Golf Play Practice Closure Assessments Materials For the class: Projector Computer Power Point 1 Gyroscope Toy golf set Graph 10 min 10 min 25 min variable 5 min variable For each pair of students: 1 Game Boy® Advance SP Twisted Forces http://mathinscience.info © MathScience Innovation Center 1 1 WarioWare™ Twisted cartridge 1 mechanical pinball game 1 sticky note State and National Correlations Virginia Standards of Learning: Science (4.1; 4.2); Math (4.20) National Science Education Standards: Position and Motion of Objects Instructional Strategies 1. Anticipatory Set 1.1 Demonstrate and start a large mechanical gyroscope. Identify the rotational motion of the gyroscope. Discuss the forces acting on it, how it can be moving while remaining balanced on the point and what force acts on it to make it fall. Balance occurs when forces are equal. Discuss force – push and pull, motion, and kinetic energy. Evaluate the students’ previous knowledge on force and allow them to provide examples of motion when two objects interact. 1.2. Observe Newton’s three laws of motion from the Power Point and how it relates to our every day lives. 2. Activity: Mechanical Pinball 2.1. Introduce the hand-held pinball game. Instruct the students to move the game so that some of the balls come to rest in the holes. Question the students about what they had to do to get the balls to go in the holes (pulling on the stick makes the balls move) and what happens to the balls when they hit each other (tilting, moving, and rocking the game makes the balls bounce off each other and change direction). State that force must be added to make the balls move. Question the students on the best position for the game (horizontal or vertical). 2.2. Discuss the science in the pinball game. (More or less force is required to get the balls to move; how our mechanical energy; i.e. our movement; is making the ball move). Identify constants, manipulated variable and responding variables. 3. Activity: Mega Micro Golf 3.1. Introduce the Game Boy® Advance SP; discuss its features and how it is used. It is best to go through all the directions, before the games are handed out, using the Power Point slides. Remind the students to hold the GBA (Game Boy® Advance) level, similar to how the mechanical game was held. Instruct the students not to remove the cartridge. Caution them that if they move the GBA too much the game will freeze and it will have to be shut down to restart. 3.2. Introduce the WarioWare™ Twisted cartridge and state that the game boy will be used in the same way the pinball game was used to observe how the motion of an object can change with force. Identify the gyroscope in the cartridge. Caution the students to keep both hands on the GBA at all Twisted Forces http://mathinscience.info © MathScience Innovation Center 2 times. 3.3. Guide students through the use of the game, completing the first hole together as a class. Note with the students the game instructions on the correct way to move the GBA. Press the start button to move into the “modes” section. Caution the students against selecting the options section (this will erase the game memory). Then move the GBA to select “souvenirs” and press the A button. Move the GBA again to select “games” and press the A button. Move the GBA again to select the golf game and press the A button. Instruct students to observe the golf game before play. The game will show the complete hole before allowing play to begin. Instruct the students to set down the GBA for a few minutes and question the students about the motion of the ball. Ask the students to formulate a hypothesis about the motion of the ball into the hole (If the student moves with more force to hit the ball, the ball will have more energy to go past the hills and get closer to the hole. More force gets the ball closer to the hole, requiring fewer shots by the student, resulting in a better score.) 3.4. Allow the students to begin playing, taking turns with their partner. There are five holes to complete the game. Instruct the students to enter total scores on the sticky note and transfer to (teacher can enter scores) spreadsheet. To end the game, press the start button and move the GBA to select exit and press the A button. Use the B Button to go back to “modes section”. Turn off the power switch and leave the cartridge in the GBA. Evaluate resulting graph with the class. A lower score means that the students have taken fewer shots to complete the game. This means that the students have appropriately adjusted their force on the ball. The lower score is the better one. 3.5. Discuss how the game cartridge has a piezoelectric gyroscope inside. Our mechanical energy (motion) is sensed by the gyroscope which converts it to electrical energy for the computer to sense. Students can feel the gyroscope operate while they play the game if the GBA is moved properly. The piezoelectric gyroscope is a little like the inside of our ears where there are cells that detect fluids moving in canals that send electrical pulses to our brain telling us which way we are moving. If we spin around too fast our brain senses this, we get dizzy, and fall down (this is the picture that the game shows as the wrong way to move the GBA). Practice 1. Homework: Have students select a toy at home. The students will describe how Newton’s three laws of motion affect the motion of the toy. Does this toy convert one form of energy to another? Closure Review Newton’s Laws of Motion. Use the toy golf set to illustrate the three laws of motion. Discuss the applications of this gyroscopic device (digital camera image stabilizing feature, Segway scooter, radio controlled cars, watch Twisted Forces http://mathinscience.info © MathScience Innovation Center 3 that uses an “ecodrive” instead of a battery). Review the United Streaming force video clip. The students may have questions about the Nintendo WII. It uses the piezoelectric gyroscopes and three accelerometers in its motion. Extensions 1. The Effect of Spin: Tie a crayon to one end of a piece of string. Slip the other end through the hole in a CD. Hold the loose end of the string and let the CD hang free at the other end. Gently swing it back and forth. Observe the disk carefully. Then, give the disc a good spin. As it is spinning swing the string back and forth. Observe the disc this time and compare your observations when the disc was not spinning. 2. Experiment with Friction: Have the students practice flicking a CD with their finger so it slides across a smooth surface. Investigate how the CD will slide across different surfaces using the same force and measure with a ruler. Have the students predict what will happen if a rubber band is put around the CD. Experiment again. Discuss the affect of friction on the experiments. Twisted Forces http://mathinscience.info © MathScience Innovation Center 4 Assessment Sample items are provided for use in checking students’ understanding. Paper Pencil Test: Twisted Forces Product and Rubric: Twisted Forces The following table shows how the assessment items are related to specific objectives. Objective Investigate force and motion using handheld “pinball’ game. 5 Investigate Newton’s laws of motion using the Nintendo® Game Boy® Advance SP system and WarioWare™ Twisted Game cartridge. 7,8 Observe forces that change the motion of objects. Identify energy transformations and the energy of motion Identify applications of this technology in everyday things. Collect and display experiment data in graph form Major Understanding: When two objects interact they exert forces on each other that may affect the motion of the objects. The effect of different forces on an object’s motion can be observed using both a handheld pinball game and a hand-held video golf game. A gyroscope in the video game is used to sense motion caused by the transfer of energy from the player to the game cartridge. Twisted Forces PaperPencil Test http://mathinscience.info Project/ Performance 2,5,7,8 1,2 6 3,4 Product and Rubric © MathScience Innovation Center 5 Teaching Tips 1. Some tips about the materials used in this lesson: 1.1 Make sure the GBA is charged. Three hours are required for a full charge. Remind the students to handle the GBA gently. Be sure to insert cartridge all the way and then turn on GBA. You may wish to have the students turn off the volume. Use the start button and the A button to skip or move through the areas of the games. The B button is used to go back. If the cartridge asks to be calibrated, keep from moving it for that period of time. Instruct the students when the GBA is turned on to skip the intro with the start button. When you reach Modes, move the GBA to select souvenirs with the A button. Move the GBA to select Games with the A button. Move the GBA to select the golf game with the A button. A button also selects start on the golf game. When time for game play is over, push the start button and move the GBA to select exit with the A button. Then use the B button to go back to Modes. Turn off the GBA before the cartridge is removed. Caution: Do not select the options section; it will delete the game memory. 1.2 Mechanical energy is the energy of moving objects, large or small likeatoms. Electrical energy is moving electrons. Energy is defined as the ability to do work and can be converted from one form to another. All energy can be considered as potential or kinetic. Kinetic energy is the energy possessed by moving object and potential energy is stored energy in an object because of its position or parts arrangement. 1.3 Balance organs in the ear are called the vestibular system. 2. Supply sources for this lesson: The WarioWare Twisted cartridge is available on line at www.amazon.com or in local EBGames stores. The Game Boy Advance SP is available locally at Target or Best Buy. Other supplies used in this lesson can be purchased at Dollar Tree, Wal-Mart or Target. 3. What are the answers to the Paper/Pencil test? 1. B, 2. B, 3. team 3, 4. team 5, 5. D, 6. Pictures, 7. Law of inertia, 8. Law of reaction. References MathScience Innovation Center Information on educational programs available to students, teachers and school divisions and procedures for registering for programs. http://msinnovation.info MathScience Innovation Center: On-Line Educational Programs Learn through on-line virtual classrooms, web-based lessons and on-line courses. Access proven lesson plans and instructional modules. http://mathinscience.info Planet Science Click on “wired” and play online arcade games developed by the UK’s Twisted Forces http://mathinscience.info © MathScience Innovation Center 6 National Endowment for Science, Technology and the Arts. www.scienceyear.com Zona Land ( an approved SciLink of NSTA) Explanations for Newton’s Three laws of Motion and problems using them. http://id.mind.net/~zona/mstm/physics/mechanics/forces/newton/newton.html Twisted Forces http://mathinscience.info © MathScience Innovation Center 7