Magnetic Hockey

1. MagneticHockey Learn about magnetic forces by playinghockey!

2. Discover new hands-on builds and programming opportunities to further your understanding of a subjectmatter.

3. The Completed Look of the Build It's a great day for MagneticHockey! This build will be used as the playing surface for our Race to Six Magnetic Hockeygame.

4. Exploration • Now that the build is finished, consider how and why it was built this way. Answer the following questions in your engineeringnotebook. • Why do you think the tires were used at the bottom of each tableleg? • If you didn't want to use the magnetic game pieces to move the puck (gear), what other VEX pieces could you use? Sketch and explain yourdesign. • The design of this hockey table is not necessarily only appropriate for hockey. What other games could you play on thistable?

5. Test your build, observe how it functions, and fuel your logic and reasoning skills through imaginative, creativeplay.

6. Magnetic Beam North228-3167-020 Description This magnet responds to any ferrous metal or standardmagnet. • Magnetic Beam North228-3167-020 • CommonUses: • This magnet can be used to attract or repel ferrousmetal. • This magnet can be attached to robots to perform tasks related tomagnets.

7. Magnetic Beam South 228-3167- 010 Description This magnet responds to any ferrous metal or standardmagnet. • Magnetic Beam South228-3167-020 • CommonUses: • This magnet can be used to attract or repel ferrousmetal. • This magnet can be attached to robots to perform tasks related tomagnets.

8. What is aMagnet? Magnetic field flowing from the two differently shapedmagnets What is aMagnet? A magnet is a material that produces its own magnetic field that can interact with other magnetic fields, far or nearby, creating attraction orrepulsion.

9. A magnetic field's flow always forms a closed loop between its north pole to its south pole. “North” and “South” is a naming convention to describe the flow, not a description of that particular portion of the magnet. If you slice out the “N” part of the magnet, it will become a separate smaller magnet with its own north and southpole. This means it doesn’t matter what shape the magnet is (long, short, small, big, bumpy or smooth), its magnetic field will always flow in one direction. This is how a compass works. It aligns itself to the magnetic flow of our planet. Earth is like a giantmagnet!

10. How MagnetsWork Magnets follow a very simple set of rules. Opposite sides attract and the same sides repel. The VEX magnet comes in two colors, red and black, which have opposite magnetic poles at theirtip. 1. OppositesAttract Try putting the red and black colored magnets together. You can see and feel theattraction.

11. 2. Strength Decreases withDistance The attraction between two magnetic fields will grow stronger as the distance between them decreases. Think of magnetic fields as multiple strands of flow. The closer you are, the more of these strands will try tointeract.

12. 3. Same SidesRepel Try to pair the red magnet with another red magnet, and the black magnet with another black magnet. Notice how the magnets will repel oneanother.

13. 4. Magnets Always Have a North and SouthPole The VEX magnets may appear to have only a north or a south pole, but that is not true. They are actually very short magnets, north pole on one side of the “coin” and south pole on the other side. The red magnet simply has its north pole facing outside, while the black magnet has its south pole facingoutside. Here is an experiment that will prove whether these small magnets have north and south poles: slowly move a red magnet to the handle-side of another red magnet. Youalready

14. know a red magnet will repel another red magnet, but what happens this time? Did the magnets repel or attract? What does their behaviorindicate?

15. Magnetic HockeySetup Some minor alterations will need to be made to the game table before playing Magnetic Hockey. 1. Make the Bottom of the TableSmooth The cardstock will allow the magnets to movesmoothly Turn the game table upside down and add two pieces of 8.5x5 inch cardstock to thebottom.

16. 2. Secure theCardstock Tape will prevent the cardstock from falling from thetable Secure the cardstock to the bottom of the table withtape.

17. 3. Make the Top of the TableSmooth The cardstock will allow the magnets to movesmoothly Turn the table right-side up and add one piece of 8.5x11 inch cardstock to the top.

18. 4. Secure theCardstock Tape will prevent the cardstock from slidingaround Secure the cardstock to the top of the table withtape.

19. 5. Add the GameGraphics The game graphics will make your game table look like an actual hockeyrink Download and print the GameGraphics.pdf file. Then place the print on top of the cardstock. The print will not need to be taped to the gametable.

20. 6. Would You Rather PlaySoccer? Magnetic Soccer is played by the same rules as MagneticHockey If you are a fan of soccer, you can use the soccer graphic instead. The game is played the same way regardless of what graphic isused.

21. Race to Six MagneticHockey Challenge a friend to a game of Magnetic Hockey. Each team will use a magnetic player piece to both defend their goal and to score in their opponent's goal. The first team to score six goals wins! 1. Controlling Your Magnetic PlayerPiece Keep your hands under thetable! Each player will control their magnetic player piece from below the gametable.

22. 2. Home Team Starts theGame Home ice is not really a big advantage Flip a coin or play rock, paper, scissors to determine who will be the home team. The game starts with the home team in possession of thepuck.

23. 3.Scoring The slight difference between a goal and bitterdisappointment... A goal is scored when the puck completely crosses the red goal line.

24. 4. KeepingScore This team has won the game by scoring sixgoals! After scoring a goal, place a 1x2 connector pin in the scoreboard above your goal. The first team to score six goals wins the game. After a goal is scored, the game will restart with the team that was scored on in possession of thepuck.

25. 5.Offside Don't move your player piece too aggressively or you may gooffsides A player is offside when their entire magnetic player piece crosses the center red line into their opponent's end of the game board. Fortunately, there is horizontal beam under the game board that will, in most cases, prevent your magnetic player piece from crossing the center red line. However, if you move your player piece too aggressively, the top half of the magnet may separate from the bottom potentially leading to an offside play. If a player is offside, their opponent will be awarded a penaltyshot.

26. 6. HandsOff! Hint: You can use your magnet to draw your opponentoffsides Keep your hands under the table during game action! It is a penalty during game action to use your hands to touch the top half of your magnetic player piece, the puck, or any part of the playing surface. If you do so, your opponent will be awarded a penaltyshot. Hint: If the top half of your magnetic player piece comes off and it is not offsides, you cannot reattach the magnets with your hands. You must use the lower half of your player piece to magnetically reattach the top half. Also, your opponent can draw your player piece offside with their magnet.

27. 7. PenaltyShot This should be an easy goal. Don't blowit... A penalty shot is one uncontested attempt to score agoal. Warning: if a player goes offside while scoring a penalty shot, the goal will not count. However, no further penalty will be assessed. After the penalty shot, the game will resume with the team that committed the penalty in possession of the puck.

28. 8. Out ofPlay Gameon! If the puck leaves the playing area, it will be considered to be the fault of the last player to touch the puck. Therefore, the game will resume with that player's opponent awarded possession of thepuck.

29. Become a 21st century problem solver by applying the core skills and concepts you learned to other problems.

30. MagneticCompass MagneticCompass Earth is aMagnet All magnets have a north pole and a south pole, including Earth. These poles are magnetic and a north pole will be attracted to a south pole, creating a magnetic field around the area. Magnets on earth can interact with these fields, such as using a compass. A compass has a magnetic pin inside that moves and spins freely to point in the direction of the north magnetic pole. This tool is very useful for navigation in places with few landmarks, such as an ocean or desert. A compass helps locate your direction by always pointing north using the Earth's magnetic field. If you are lost, a compass can show you which direction is north so you can find your way.

31. Attaching MagneticBeams VEX IQ robot with Magnetic Beamsattached Make Your Robot Magnetic Magnetic Beams can be attached to you robot to collect, grab, and manipulate different objects. Using pins to secure the beam in place, magnetic beams can be used to enhance the functionality of a robot’s claw or arm mechanism to grab or collect magnetic materials. Test your magnetic beams with other parts in your kit, or experiment with objects aroundyou

32. to find out which aremagnetic! Click Here to purchase a Magnetic Beam Pair on the VEX IQStore!

33. Is there a more efficient way to come to the same conclusion? Take what you’ve learned and try to improveit.

34. Prepare for the Stabilization Challenge Playing Magnetic Hockey can get intense. Have you noticed how much the game board shakes? What can you do to make it morestable? 1. Identifying a Weakness in theStructure Your build can shake due to the way the legs aredesigned.

35. 2. Weak and StrongAxis Many structures have their own weak axis and strong axis. They can provide a hint as to how you can make it stronger. To help you understand, let’s look at the weak and strong axis of a ruler. Bend a plastic or a metal ruler on its flat side. It should be pretty easy. This is its weak axis. But can you bend it vertically? It is probably impossible. This is its strongaxis.

36. 3. Weak and Strong Axis of theTable Try to find the strong axis and weak axis of the board. In what direction of force does the board shake the most? Shake the least? There should be one axis where the board shakes the most. Can you identifyit? One culprit contributing to this weakness is the connector between the board and its four legs. All of the legs are identical, so they have the same weak axis. This is as if you’ve added four weaknesses together. What is the weak axis of each legs? Can you identify it?

37. 4. Distributing the WeakAxis You can stabilize the board, by splitting up its weakness to different axes. Remove two legs that are diagonal to each other. Turn them 90 degrees in any direction and reattach them to the board. Now the weak axes of these legs are perpendicular to the weak axes of the other legs. Try shaking the hockey table now. Does it still shake the same way, or does it seem more stable?

38. StabilizationChallenge The Magnetic Hockey board could use more structuralimprovements Find the weakpoints We’ve shown you an example of how to make a structural improvement by distributing weaknesses to two differentaxes. The hockey board uses many parts, and each of these parts have a different weak axis and

39. strong axis. What other parts or sections of the build do you think are contributing to its weakness? Can you find them, and list their special weakaxis? Once you have identified a potential weakness, attempt to upgrade your hockey board's stability using your knowledge of structuralstability.

40. Improve and Tinker with YourBuild • Answer the following questions in your engineering notebook as you tinker with thebuild. • In addition to improvements for stability, what other modifications could be made to the Magnetic Hockey Table? Sketch or explain youranswer. • If you wanted to keep score using a build that is separate from the game board, what would you design using VEX IQ Parts? Sketch yourdesign. • If you wanted to change the game to be played on the table, what kind of graphic would you design to print and cover the table with? Sketch yourdesign.

41. Understand the core concepts and how to apply them to differentsituations. This review process will fuel motivation tolearn.

42. Review • All magnets have a north and southpole. • True • False • What makes a compass always pointnorth? • Earth's northpole • Mechanical gearsinside • Earth's southpole • Batteries • There are NO magnetic parts in a VEX IQSuperkit. • True • False • Which of the following are true aboutmagnets? • Their magnetic fields always flow in onedirection • They always have a north and southpole • Their shape does not affect their magneticflow • All of the above • The north and south poles of two magnets will always repel oneanother. • True • False • Distributing weaknesses to multiple axes can make a buildstronger. • True • False

43. Earth is a giantmagnet. • True • False • It is possible to remove one of a magnet's poles by cutting it inhalf. • True • False • The attraction between two magnetic fields will grow stronger as the distance between themdecreases. • True • False • What purpose does the cardstock on the Magnetic Hockey game tableserve? • Allows the magnets slide moresmoothly • Makes the game table lookgood • Increases the strength of the magnets • Makes the game table morestable

44. Additional information, resources, andmaterials.

45. Removing Connectors from Beams andPlates Using a pitch shaft to remove a cornerconnector How to Easily RemoveConnectors You can easily remove corner connectors from beams or plates by placing a metal shaft through one of the holes of the corner connector and pulling outward while holding down the beam orplate.

46. Removing Pins from VEX IQ Beams andPlates Removing a pin from a plate assembly using abeam How to Easily Remove Pins from Beams andPlates You can quickly remove connector pins from beams or plates by pressing a beam against the back of the pin, which partially pushes the pin out, so you can remove it with your fingers. You can use this technique to more easily remove pins from individual plates and beams, or from builtstructures.