Presentation is loading. Please wait.

Presentation is loading. Please wait.

+ Build a Better Candy Bag Build Your Own Robot Arm Critical Load Working With Wind Energy Activities Corali Ferrer Yvonne Pelham 14-15 November 2010 TISP:

Similar presentations


Presentation on theme: "+ Build a Better Candy Bag Build Your Own Robot Arm Critical Load Working With Wind Energy Activities Corali Ferrer Yvonne Pelham 14-15 November 2010 TISP:"— Presentation transcript:

1 + Build a Better Candy Bag Build Your Own Robot Arm Critical Load Working With Wind Energy Activities Corali Ferrer Yvonne Pelham 14-15 November 2010 TISP: Spain and Portugal September 2010

2 + Corali Ferrer R9 TISP Coordinator Build a Better Candy Bag 2

3 + Learning Objectives Problem Solving: Recognize and apply geometric ideas in areas outside of the mathematics classroom Apply and adapt a variety of appropriate strategies Communication: Communicate mathematical thinking coherently and clearly to peers, teachers, and others 3

4 + Candy For Sale Loads of Candy Owners want a new candy bag that is attractive and more functional than the one they currently use. 4

5 + 5 Design Objective Design and implement a candy bag using the available materials Limit of 1 meter of tape per group of 2 The bag is to be hand carried The bag is to be sturdy, functional and aesthetically pleasing A design with unusual shape or twist is highly desirable 5

6 + 6 Outline and Procedures (1) Divide into teams of two (2), Agree on a name for your team Brainstorm and create a sketch of a design of a candy bag Build a model of your design with given materials: a limit of 1 meter of tape per team 6

7 + Candy Bag 2 sheets of plastic Tape Twine/String 7 Available Materials

8 + 8 Outline and Procedures (2) Predict how much weight the bag might hold Test the strength of your bag Only after all sketches and calculations were complete 8

9 + 9 Outline and Procedures (3) Discuss and agree upon a redesigned bag Provide a sketch and estimate of weight to be carried Answer reflection questions as a team 9

10 + 10 Reflection Questions What was one thing you liked about your design? What is one thing you would change about your design based on your experience? How did the materials provided impact your design? How might you incorporate this activity into your classroom instruction? 10

11 + Corali Ferrer R9 TISP Coordinator Build Your Own Robotic Arm 11

12 + Learning Objectives Learn about technological design Use mathematical calculations for design Learn about motion and force Practice communication skills through written and oral exercises 12 European Robotic Arm

13 + Europe, through ESA, is one of the five partners (NASA, Russian Federal Space Agency, ESA, JAXA, CSA) contributing to the development of the International Space Station. The European Robot Arm (ERA) is one such contribution. ERA acts as a tool for: Installation, deployment and replacement of elements of the Russian Segment of the International Space Station, Inspection of the Russian Segment, Support/transfer of EVA cosmonauts, Transfer of Orbital Replacement Units and other assembly tasks. Robot Arm International Space Station 13

14 + Large symmetrical robotic arm with 7 degrees of freedom The arm consists of 2 End Effectors, 2 Wrists, 2 Limbs and 1 Elbow joint together with electronics and cameras. Both ends act as either a hand for the robot or the base from which it can operate. Robot Arm The European Robot Arm 14

15 + Robot Arm We will build a robot arm from simple materials The arm must pick up a plastic cup from a distance of 45cm Lift the cup to a height of at least 15cm Bring the cup back to rest and release it Pick up cup upside down 15 Building the European Robotic Arm

16 + Robot Arm You cannot get too close… 16 You cannot get any closer than 45cm to the cup at any time Cup Student Robot Arm 45cm

17 + Robot Arm Wire Cardboard Clothespins Ice Cream sticks Rubber bands Binder clips Paper clips Short pencils Tape Paper fasteners 17 Available Materials

18 + Robot Arm Divide into teams of two (2) Review the requirements Discuss a solution and create a sketch of your design Build a model of your design with given materials Test your model 18 Outline and Procedures

19 + Robot Arm Discuss and agree upon a redesign If needed after testing, or to enhance the previous design Answer reflection questions as a team 19 Redesign after testing

20 + Robot Arm 1. The arm must pick up a plastic cup from a distance of 45cm Lift the cup to a height of at least 15cm Bring the cup back to rest and release it 2. Lift and release the cup when it is upside down 20 Design requirements

21 + Robot Arm What was one thing you liked about your design? What is its main weakness? What is one thing you would change about your design based on your experience Are there algebraic and physical principles that can be applied to this activity? How would you modify the instructions to create a better experience for the participants? 21 Reflection Questions

22 + Corali Ferrer R9 TISP Coordinator Critical Load

23 + Learning Objectives Learn about structural engineering Learn how to reinforce the design of a structure to hold more weight. Use mathematical calculations for testing Practice communication skills through written and oral exercises 23

24 + Millau Viaduct Millau, France Worlds Tallest Bridge 2460m long 434m pylon height 270m road height December, 2004 Critical Load Great Structures of the World 24

25 + Skyscraper of Cards 2010 World Record House of Cards Made of 218,792 cards, measuring 10.39m long, 2.88m tall and wide. No glue or tape; just cards Built by Bryan Berg in 2010 Critical Load Great Card Structures of the World 25 Venetian Macao-Resort-Hotel in Macau, China, on 10 March 2010.

26 + Force is placed on a structure Structure can support up to a certain force created by the weight At a certain point, the structure will fail, breaking The maximum force the structure can sustain before failure is known as the Critical Load Critical Load What is Critical Load? Force 26

27 + Critical Load A high critical load is not the only parameter to consider Is the best bridge made by filling a canyon with concrete? It certainly would have a high critical load! Consider also the weight of the structure Lighter is better, given the same critical load These two parameters are combined in an Efficiency Rating: 27 Efficiency

28 + Critical Load 28 Groups of 2 Up to 10 cards + 1m tape Devise a plan to build a load bearing structure Should have a flat top Support load with base area of 10x10cm at least 8 cm above the table No altering of cards allowed – just tape! No wrap-ups of tape Tape is used to connect cards only Your Turn

29 + Critical Load Your efficiency rating: [Load at Failure] / [# of cards used] Predict what the rating of your design will be Build your design Test it! Discuss improvements, then repeat exercise for a second design 29 Your Turn

30 + Corali Ferrer R9 TISP Coordinator Working With Wind Energy 30

31 + Learning Objectives Learn about wind energy conversion Design a wind turbine Construct the wind turbine Test the wind turbine Evaluate Performance 31

32 A Wind Turbine The wind hits the blades… Shaft leads to a gearbox whose output leads to a generator to make electricity Usually has 2 or 3 blades 32 WIND

33 24 - 25 SEP 2010 33

34 + Many blade designs 34

35 + Your Challenge Design, construct and test your own wind turbine design Lift weight – 15 cm as quickly as possible Maximum 1 minute No human interaction! Blowdryer at least 30cm away from turbine 35 > 1ft, 30cm

36 + Turbine Requirements Must have a rotor shaft around which to wind up given weight Must be freestanding (no human interaction) Must use only materials provided 36 > 1ft, 30cm

37 + Test Procedure Blowdryer at least 30 cm away from turbine No human interaction with turbine Attach weight around rotor Up to 1 minute to wind up weight for 15cm Record time to wind up weight 37 > 1ft, 30cm

38 + Materials wooden sticks bendable wire string paperclips rubber bands Toothpicks aluminum foil, plastic wrap tape, wooden dowels paper, cardboard 38

39 + Procedure Teams of two (2) Develop and sketch your design Construct initial design Preliminary test Modify design, if necessary Final test 39

40 + Evaluate Your Design Efficiency of design may depend on Cost of materials Speed (rotations per minute) Power (time to wind weight) Possible measure of efficiency: Eff. = (Cost of materials) / (time [sec] to lift weight) Are two designs that have the same rotational speed equally as good? 40


Download ppt "+ Build a Better Candy Bag Build Your Own Robot Arm Critical Load Working With Wind Energy Activities Corali Ferrer Yvonne Pelham 14-15 November 2010 TISP:"

Similar presentations


Ads by Google