P H Y S I C S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ hoever heard of students playing basketball and holding long jump competitions during a unit on Newton’s Laws of Motion? Teaching the traditional laws of motion can become tedious and seem unrelated to the lives of action-oriented middle school students. Using hands-on, discovery learning not only promotes critical-thinking skills— such as synthesizing, analyzing, predicting, discovering, and evaluating—but also develops affective, social, and psychomotor skills. Plus, adding some fun and excitement to the classroom is a bonus to any lesson! Imagine your students’ reactions when they see a basketball hoop hanging from the door, and you tell them that they will use it in class! During the Issac Newton Olympics, students move through seven stations. At each station, students complete a handson activity that explores at least one motion concept. After each activity, students complete a short evaluation that reinforces what they have learned and how it relates to everyday life. Every year, I present a unit on the laws of motion. I developed this unit to involve students and to reinforce content. Because its reputation for being fun has spread among the classes, students eagerly anticipate the Olympics each year. Setting up the stations CU NH A The day before Olympic day, I set up the classroom; this takes approximately one hour. When students enter class the next day, all ILL US TR AT IO NS BY JO AN NE Carol Cox is a seventh and eighth grade science teacher at Meridian Middle School, in Blue Mound, Illinois. 18 science scope M ay 2 0 0 1 ○ ○ ○ ○ ○ ○ ○ ○ P ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ H Y S ○ by Carol Cox the desks are on the far edges of the classroom to provide a large open space for the Olympic stations. The drastic visual change lends an air of excitement and anticipation to the room. The seven stations are set up around the science laboratory. At each I place a large “Station #” sign and an envelope with copies of the student activity inside. Students follow the activity sheet directions, which include evaluative questions for students to answer after they complete the activity. I encourage students to take their lecture notes and textbooks with them, in case they need a reference when they answer content questions. Before beginning, I assign students to small groups according to ability and leadership levels. For this activity, I choose a mixture of abilities. I determine group size by dividing the total number of students by the number of stations I’m using. Ideally, you should set up as many stations as you need to create groups of three to four students. Timing the transitions When we are ready to begin, I direct group #1 to station #1, and each of the remaining groups to their respective stations. I ring a small bell to start the Olympics and for each station change. Each group rotates through a station every six to ten minutes, depending on the amount of time available. I have conducted the Olympics on both a block schedule (90 minutes) and a traditional schedule (40 minutes). A traditional schedule requires two class periods; a block schedule requires only one. Assessing the activities Student assessment is ongoing as each group progresses through the stations and answers each activity card’s evaluative questions. Some of these questions require students to use their criticalthinking skills. For example, a question of this type may ask students to analyze the activity and relate it to a particular law of motion. ONLINE EXTENSION For all seven Olympic stations, NSTA members can log on to www.nsta.org/pubs/scope. M ay 2 0 0 1 science scope 19 I C S P H Y S I C S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Teacher instructions Station #1: Shooting hoops Materials • indoor basketball hoop and matching soft, foam basketball • duct tape Preparation Securely tape the basketball hoop on a chalkboard or above the doorframe, approximately 1.5–2 m from the floor. Place the basketball underneath. Clear at least a 2-m2 area for students to move around in during this activity. Safety: Instruct students that slamdunking is not allowed because it will tear the hoop down. Students will play a quiet game of PIG, which is a shortened version of the basketball game HORSE. (If you need a refresher on these games, ask a physical education teacher or a colleague.) Background This station can reinforce all three of Newton’s laws, but is designed specifically to reinforce the second law: As the mass or acceleration of an object increases, so does the amount of force needed to change the motion of that object (f=ma). How does this apply to a game of basketball? The more force a player exerts when shooting, the faster and farther the ball will travel. Also, the farther away from the hoop a player stands, the more force he or she will need to exert when throwing. Everytime the basketball is thrown or shot, it becomes a projectile (any object that is launched into the air and continues in motion by its own inertia). Station #2: Standing long jump Materials • masking tape • metric tape measure • colored chalk Preparation Mark off the long jump area with one strip of masking tape as the starting line. Safety: Show students in which direction to jump from the starting line, so they donít run into students at other stations. Background This station reinforces Newton’s first law: An object in motion will remain in motion until acted upon by an outside force; an object at rest will remain at rest unless a force moves it (law of inertia). When students jump, the tendency for their bodies to stay in motion through the air is due to inertia. Gravity causes them to land. Finally, although this is the standing long jump, students may want to get a running start to take advantage of their momentum. 20 science scope M ay 2 0 0 1 ○ ○ ○ ○ ○ ○ ○ ○ ○ P ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ H Y S ○ Teacher instructions Station #3: Cork on yarn Materials • stopper-type cork with hole in middle • 46-cm piece of yarn • four sets of safety goggles Preparation Thread the yarn through the cork and tie securely. Safety: Instruct students to wear goggles at all times during this activity; to sit on the floor at this station; and to twirl the yarn at a medium speed and parallel with the ground. Background This station reinforces Newton’s first law and the concept of centripetal force. When students let go of their twirling cork, they will observe that it flies in a straight line. It does this because an object in motion will remain in motion (straight line) unless acted upon by an outside force. The yarn is the force that pulls the cork out of its straight-line path when it is circling. The cork on the string is kept moving in a circle by centripetal force. Students repeat this procedure three times to demonstrate how scientists repeat procedures and experiments for accuracy. The hammer throw is a track event that uses this same principle. Racing events that utilize a circular track take this force into consideration when designing their tracks and necessary skills. Others are simple content questions. At the end of the Olympics, the class gathers for approximately 15 minutes to evaluate their experiences. We use the student activity sheets from each station to guide our discussion. I call students to answer questions and explain their answers. You can decide whether to assess students based on their written answers to the evaluative questions or on their contributions to the class discussion. Opening your own Olympics For background information and instructions on how to set up three of the seven stations, see pages 20–21. For the corresponding student activities, see page 22. Go to the Science Scope website (www.nsta.org/pubs/scope) to find all seven activities. M ay 2 0 0 1 science scope 21 I C S P H Y S I C S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Student instructions Station #1: Shooting hoops Play a quiet game of PIG—a shortened version of the basketball game HORSE. No slamdunking! After your game, answer each of the following: 1. Write down the formula for Newton’s second law of motion. 2. How was it applied in your game? 3. Every time you shoot the basketball, what does the basketball become? (Hint: This science term is defined as “an object that is launched into the air and continues in motion by its own inertia.”) Station #2: Standing long jump Standing behind the masking tape line, make your best jump. Have teammates measure your distance in metric. Each group member should jump two times; record the results of each attempt. Mark each jump with a different color of chalk. After all of your group members have jumped, answer the following: 1. What law of motion allowed you to move through the air? 2. What is the name of the tendency for your body to stay “in motion” through the air? 3. What force brought you back down? 4. Although this is the standing long jump, did you want to get a running start? Why? 5. By the way, who is your group champion ? Station #3: Cork on yarn Sit on the floor. Put on your goggles. Thread the yarn through the cork. Securely tie one end of the yarn around the cork. Pick up the empty end of the yarn and, with the cork suspended below your hand, twirl it at a medium speed. Watching closely, let go of the yarn. Repeat this procedure two more times, then answer the following: 1. What happened when you let go of the yarn? Why? Explain in laws of motion. 2. Why did you perform this experiment three times? 3. A cork whirling on a string is kept moving in a circle by force. What track and field event is based on this force? 4. What other sporting events take this force into consideration when designing their tracks and skills used? 5. What is providing the force that pushes the cork out of its straight-line path? 22 science scope M ay 2 0 0 1 ○ Isaac Newton Olympics Page 1 of 8 To print this page, select "Print" from the File menu of your browser Visit the Copyright Clearance Center to obtain permission for approved uses << back Science Scope May 2001, p. 18-22 Feature Isaac Newton Olympics Carol Cox Isaac Newton Olympics by Carol Cox Whoever heard of students playing basketball and holding long jump competitions during a unit on Newton’s Laws of Motion? Teaching the traditional laws of motion can become tedious and seem unrelated to the lives of action-oriented middle school students. Using hands-on, discovery learning not only promotes critical-thinking skills— such as synthesizing, analyzing, predicting, discovering, and evaluating— but also develops affective, social, and psychomotor skills. Plus, adding some fun and excitement to the classroom is a bonus to any lesson! Imagine your students’ reactions when they see a basketball hoop hanging from the door, and you tell them that they will use it in class! During the Isaac Newton Olympics, students move through seven stations. At each station, students complete a hands-on activity that explores at least one motion concept. After each activity, students complete a short evaluation that reinforces what they have learned and how it relates to everyday life. each year. Every year, I present a unit on the laws of motion. I developed this unit to involve students and to reinforce content. Because its reputation for being fun has spread among the classes, students eagerly anticipate the Olympics Station #1: Shooting hoops http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 2 of 8 Materials • indoor basketball hoop and matching soft, foam basketball • duct tape Preparation Securely tape the basketball hoop on a chalkboard or above the doorframe, approximately 1.5–2 m from the floor. Place the basketball underneath. Clear at least a 2-m2 area for students to move around in during this activity. Safety: Instruct students that slamdunking is not allowed because it will tear the hoop down. Students will play a quiet game of PIG, which is a shortened version of the basketball game HORSE. (If you need a refresher on these games, ask a physical education teacher or a colleague.) Background This station can reinforce all three of Newton’s laws, but is designed specifically to reinforce the second law: As the mass or acceleration of an object increases, so does the amount of force needed to change the motion of that object (f=ma). How does this apply to a game of basketball? The more force a player exerts when shooting, the faster and farther the ball will travel. Also, the farther away from the hoop a player stands, the more force he or she will need to exert when throwing. Every time the basketball is thrown or shot, it becomes a projectile (any object that is launched into the air and continues in motion by its own inertia). Setting up the stations The day before Olympic day, I set up the classroom; this takes approximately one hour. When students enter class the next day, all the desks are on the far edges of the classroom to provide a large open space for the Olympic stations. The drastic visual change lends an air of excitement and anticipation to the room. The seven stations are set up around the science laboratory. At each I place a large “Station #” sign and an envelope with copies of the student activity inside. Students follow the activity sheet directions, which include evaluative questions for students to answer after they complete the activity. I encourage students to take their lecture notes and textbooks with them, in case they need a reference when they answer content questions. Before beginning, I assign students to small groups according to ability and leadership levels. For this activity, I choose a mixture of abilities. I determine group size by dividing the total number of students by the number of stations I’m using. Ideally, you should set up as many stations as you need to create groups of three to four students. Station #2: Standing long jump Materials • masking tape • metric tape measure • colored chalk Preparation Mark off the long jump area with one strip of masking tape as the starting line. Safety: Show students in which direction to jump from the starting line, so they don’t run into students at other stations. Background This station reinforces Newton’s first law: An object in motion will remain in motion until acted upon by an outside force; an object at rest will remain at rest unless a force moves it (law of inertia). When students jump, the tendency for their bodies to stay in motion through the air is due to inertia. Gravity causes them to land. Finally, although this is the standing long jump, students may want to get a running start to take advantage of their momentum. Timing the transitions When we are ready to begin, I direct group #1 to station #1, and each of the remaining groups to http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 3 of 8 their respective stations. I ring a small bell to start the Olympics and for each station change. Each group rotates through a station every six to ten minutes, depending on the amount of time available. I have conducted the Olympics on both a block schedule (90 minutes) and a traditional schedule (40 minutes). A traditional schedule requires two class periods; a block schedule requires only one. Assessing the Materials activities • stopper-type cork with hole in middle Station #3: Cork on yarn • 46-cm piece of yarn • four sets of safety goggles Student assessment Preparation is Thread the yarn through the cork and tie securely. Safety: Instruct students to wear goggles at all times during this ongoing activity; to sit on the floor at this station; and to twirl the yarn at a medium speed and parallel with the ground. as each Background group This station reinforces Newton’s first law and the concept of centripetal force. When students let go of their twirling progresses cork, they will observe that it flies in a straight line. It does this because an object in motion will remain in motion (straight line) unless acted upon by an outside force. The yarn is the force that pulls the cork out of its straight-line through path when it is circling. The cork on the string is kept moving in a circle by centripetal force. Students repeat this the procedure three times to demonstrate how scientists repeat procedures and experiments for accuracy. stations The hammer throw is a track event that uses this same principle. Racing events that utilize a circular track take this and force into consideration when designing their tracks and necessary skills. answers each activity card’s evaluative questions. Some of these questions require students to use their critical-thinking skills. For example, a question of this type may ask students to analyze the activity and relate it to a particular law of motion. Others are simple content questions. At the end of the Olympics, the class gathers for approximately 15 minutes to evaluate their experiences. We use the student activity sheets from each station to guide our discussion. I call students to answer questions and explain their answers. You can decide whether to assess students based on their written answers to the evaluative questions or on their contributions to the class discussion. Opening your own Olympics Background information and instructions on how to set up three of the seven stations are given above. Below are the corresponding student activities and the additional actvities not in the print edition of this article. Student instructions Station #1: Shooting hoops Play a quiet game of PIG—a shortened version of the basketball game HORSE. No slamdunking! After your game, answer each of the following: 1. Write down the formula for Newton’s second law of motion. 2. How was it applied in your game? 3. Every time you shoot the basketball, what does the basketball become? (Hint: This science term is defined as “an object that is launched into the air and http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 4 of 8 continues in motion by its own inertia.”) Station #2: Standing long jump Standing behind the masking tape line, make your best jump. Have teammates measure your distance in metric. Each group member should jump two times; record the results of each attempt. Mark each jump with a different color of chalk. After all of your group members have jumped, answer the following: 1. What law of motion allowed you to move through the air? 2. What is the name of the tendency for your body to stay “in motion” through the air? 3. What force brought you back down? 4. Although this is the standing long jump, did you want to get a running start? Why? 5. By the way, who is your group champion ? Station #3: Cork on yarn Sit on the floor. Put on your goggles. Thread the yarn through the cork. Securely tie one end of the yarn around the cork. Pick up the empty end of the yarn and, with the cork suspended below your hand, twirl it at a medium speed. Watching closely, let go of the yarn. Repeat this procedure two more times, then answer the following: 1. What happened when you let go of the yarn? Why? Explain in laws of motion. 2. Why did you perform this experiment three times? 3. A cork whirling on a string is kept moving in a circle by force. What track and field event is based on this force? 4. What other sporting events take this force into consideration when designing their tracks and skills used? 5. What is providing the force that pushes the cork out of its straight-line path? More events in the Newton Olympics Station #4: Balloons Teacher instructions Materials o one balloon per student Preparation Place the balloons at the station. Safety: Collect and dispose of balloons at the end of the activity. Background This station reinforces Newton's third law: For every action there is an equal and opposite reaction. When students blow up a balloon and then release it, it will fly off in the opposite direction from the direction the air is being expelled. The http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 5 of 8 action is the air leaving the balloon. The reaction is the balloon moving away. Examples of this law include a rocket launch (the action is the exhaust shooting downward; the reaction is the rocket moving upward) and a shotgun discharge (the action is the bullet exploding from the nozzle; the reaction is the gun kicking backward into your shoulder). Student instructions Blow up a balloon and hold it closed with your fingers. One person at a time, choose a direction to point the end of your balloon; count to three; and then release the balloon. Carefully observe what happens. Allow each group member to release his or her balloon and then answer the following: 1. In which directions did the balloons go? 2. How did the direction of motion compare to the direction in which the air rushed out of the balloon? 3. What specific law of motion does this station demonstrate? What part is the action? What part is the reaction? 4. What type of vehicle uses the same law? In this case, what is the action and what is the reaction? 5. What type of weapon uses the same law? In this case, what is the action and what is the reaction? Station #5: Magic Teacher instructions Materials o one coin o one glass of water o a piece of heavy cardboard cut into an 8-cm x 15-cm rectangle Preparation Set the materials on the station's tabletop. Safety: Have paper towels available to wipe up spills. Background This station emphasizes Newton's first law. In this activity the coin is "at rest" on the cardboard and its tendency is to remain that way. When students pull the cardboard from underneath the coin, the coin falls straight down into the water. The inertia of the coin makes it hold its original position. To achieve this result, students must pull the cardboard quickly. Student instructions Place the piece of cardboard over the top of a glass of water. Place the coin in the center of the cardboard. Quickly try to pull the cardboard out from under the coin. Let each group member try this two times and then answer the following: 1. What happened? http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 6 of 8 2. What does the coin tend to do most often? 3. What do scientists call the tendency to resist change in motion? To which of Newton's laws does this apply? 4. What famous trick uses this law of inertia? (Hint: Comedians usually try it unsuccessfully, which creates clatter and mess.) Station #6: Record player Teacher instructions Material o record player (your librarian or media resource person may have one stored) Preparation Place the record player on the station's tabletop. Background This station reinforces Newton's third law. As students "walk" their fingers around the turntable, they will notice that, to make the turntable move in a certain direction, they must "walk" their fingers in the opposite direction. Similarly, if you are stranded in a canoe with a load of coconuts, you could propel yourself toward the shore by throwing the coconuts, one by one, in the opposite direction of the shore. The action is the force of the coconuts thrown in the direction opposite shore; the reaction is the force that propels you toward shore. Student instructions Long before the days of CD or DVD players, people listened to music on record players, like the one in front of you now. The large circular part located in the middle is called the turntable. For this activity, you do not need to turn on the record player. Instead, walk your fingers around the rim of the turntable, making the turntable move as you go. Carefully observe the resulting effect between your fingers and the turntable. Allow each group member to repeat this procedure and then answer the following: 1. What happened? 2. Which of Newton's laws explains what happened? 3. Imagine that you are in a canoe in the middle of a lagoon. Your canoe is loaded with coconuts. You have lost your paddle, but you don't dare use your hands for paddles because of the crocodiles in the lagoon. How could you get to shore? Station #7: Ramp building Teacher instructions Materials o one 20-cm x 46-cm piece of plywood or thin board (for the ramp) o one 25-cm x 25-cm piece of foam board that is scored down the middle, allowing it to stand alone o three 8-cm2 wooden blocks o two toy vehicles of different mass that are small enough to fit on your ramp (or one baseball and one ping-pong ball) http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 7 of 8 o one spring scale Preparation Place all the materials at the station. Background This station focuses on Newton's second law and the concept of momentum (the strength of an object's motion) by manipulating two variables-mass and velocity. In part one, students control mass by using two different size vehicles. In part two, students control velocity by changing the height of the ramp. Additionally, you can reinforce Newton's first law by asking students to name the forces that slow down the vehicles (friction and gravity). Student instructions Part one Place the two wooden blocks on top of one another, then create a ramp by placing the board on top of the stacked blocks. Stand the foam board on end approximately 36 cm from the bottom of the ramp. Before you do anything else, answer the following: 1. In a moment, you will release one of the two vehicles from the top of the ramp. What will happen to the foam board when this vehicle hits it? 2. Will the same result occur when you release the other vehicle? 3. What will cause the difference? Use the spring scale to confirm the difference in mass of the two vehicles. Which vehicle will produce more force just by its size? Now, release the two vehicles, one at a time. Repeat this procedure two times with each vehicle and answer the following: 4. Was your prediction correct? 5. What was the variable in this in this experiment? Part two Next, change the height of the ramp by removing one block. Place the foam board 36 cm away again. Place the vehicle with more mass at the top of the ramp and release it. Repeat this procedure two times and answer the following: 1. What happened? 2. When you changed the height of the ramp what were you changing? Now set the ramp on three wooden blocks and two more trials with the same vehicle. Answer the following: 3. 4. 5. 6. What happened? What formula have you been working with at this station? Which of Newton's laws explains what happened? What was the variable in this part of the experiment? http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008 Isaac Newton Olympics Page 8 of 8 Carol Cox is a seventh and eighth grade science teacher at Meridian Middle School, in Blue Mound, Illinois. back to top This article appeared in the May 2001 issue of Science Scope. Copyright © 2001 National Science Teachers Association. All rights reserved. Copyright © 2001 NSTA www.nsta.org http://www3.nsta.org/main/news/stories/science_scope.php?news_story_ID=46233&print=yes 3/18/2008
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