Exploring the Extreme Educator Guide pdf - ER - NASA

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Lesson 2: Finding the Center of Gravity Using Plumb LinesGrades 3–4Objectives• To discover the center of gravity (c.g.) of acardstock shape (two-dimensional model)of an F-15 ACTIVE using plumb line.• To demonstrate balance (state ofequilibrium) by suspending a cardstockshape of an F-15 ACTIVE from a string atthe center of gravity.Science StandardsScientific EnterpriseScience and TechnologyScience as InquiryPhysical SciencePosition and Motion of ObjectsChange, Constancy, and MeasurementEvidence, Models, and ExplanationScience Process SkillsObservingCommunicatingMeasuringInvestigatingPredictingControlling VariablesMathematical StandardsProblem SolvingCommunicatingReasoningMeasuringFunctions and Patterns22High Performance Learning Activities in Mathematics, Science and TechnologyEG-2003-01-001-DFRC
PreparationUse the pattern of the F-15 ACTIVE to traceand cut out cardboard shapes. Older studentscan do the cutting.Part 11. Introduce the F-15 ACTIVE• Ask students what they know about the F-15 ACTIVE. (A highly maneuverablefighter capable of achieving over Mach 2and altitudes of 60,000 feet.) Bring out oneof the cardstock F-15 ACTIVEs. Explainthis as an F-15 ACTIVE, a special one-ofa-kindairplane flown by NASA test pilotsfor research purposes.• Balance it flat on your finger. Ask thestudents if they think they could do thesame if they had an F-15 ACTIVE.Challenge students.• Distribute cardboard F-15 ACTIVEs ordistribute materials so students can cut outthe F-15 ACTIVEs.• Allow time for exploration as students willwant to fly their airplanes.• Tell students that NASA engineers need toknow the exact place to balance the F-15ACTIVE just as the students did whenthey balanced the models on their fingers.• Tell them NASA engineers usemathematics to find the center of gravity,and they can, too.• Students will do each step in small groups,or teacher may demonstrate.Procedure1. Attach the paper clip weight to one end ofa string.Push pinStringRulerPush pinPaper ClipWeight2. Attach the string and paper clip weight toa wall with a pushpin. This is the plumbline.3. Punch one hole anywhere on the F-15ACTIVE.4. Put the other pushpin through the hole,and let the F-15 ACTIVE dangle from thepin until it settles in a stable position.5. Put the pushpin (and hanging F-15ACTIVE) right on the plumb line.6. Use a ruler to draw a line on the F-15ACTIVE, following path of the plumbline.7. Repeat steps 3, 4, 5, and 6 once or twice.Take turns.8. Where the lines intersect is the center ofgravity.High Performance Learning Activities in Mathematics, Science and TechnologyEG-2003-01-001-DFRC23
Page 1: National Aeronautics andSpace Admin
Page 5 and 6: Table of ContentsAcknowledgments...
Page 7 and 8: How To Use This GuideControlled fli
Page 9 and 10: F-15 ACTIVE (Advanced Control Techn
Page 11 and 12: moves as well as the flight control
Page 13: with reduced weight due to replacem
Page 16: CANARDS42.83 ft.CANARDS63.75 ft.18.
Page 19 and 20: ActivityMatric e sHigh Performance
Page 21 and 22: National Science Education Standard
Page 23 and 24: Grades K - 4High Performance Learni
Page 25 and 26: 3. Tell students that NASA engineer
Page 27: Drawing of F-15 ACTIVE(Teachers, co
Page 31 and 32: Lesson 3: Changing the Center of Gr
Page 33 and 34: A1. 1 x 2 = 22. 2 x 6 = 123. 3 x 4
Page 35 and 36: Name: _____________________________
Page 37 and 38: Grades 5 - 8High Performance Learni
Page 39 and 40: Part 1Materials and Tools• Intake
Page 41 and 42: Discussion Questions1. What did you
Page 43 and 44: 9. Bend one corner from each sectio
Page 45 and 46: Intake Station DirectionsMake sure
Page 47 and 48: Combustion Station DirectionsMake s
Page 49 and 50: Combustion StationDescribe the expe
Page 52 and 53: Part 1Materials and Tools• One 8-
Page 54 and 55: Student Work Sheet (Part 2)Name: __
Page 56 and 57: Objective• Find the center of gra
Page 58 and 59: 5. Have the students calculate the
Page 60 and 61: Student Work Sheet Part 1Name:_____
Page 62 and 63: F-15 ACTIVE TEMPLATE56High Performa
Page 64 and 65: Part 1Materials and Tools• Graph
Page 66 and 67: Bar GraphDrag / Thrust in pounds120
Page 68 and 69: Part 2Materials and Tools• Graph
Page 70 and 71: G l o s s a r y64 High Performance
Page 72 and 73: Airspeed: The speed of an airplane
Page 74 and 75: Drag: Retarding force acting upon a
Page 76 and 77: Flight Envelope: The boundaries of
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Nozzles: The aft section of a jet e
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decreases, resulting in a decrease
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Taileron: A stabilator design where
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NASA RESOURCES FOR EDUCATORSNASA’
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VA and MD’s Eastern ShoresNASA Ed
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EDUCATOR REPLY CARDTo achieve Ameri
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