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1111-01 University of Alberta Library 0 1 620 3415281 7 MODULE 2 •S-' ' Cl,. .. 2S “« /WC. EDUCATION X ,®- ,^. '5^ ■‘'"{v V \ ^. Digitized by the Internet Archive in 2017 with funding from University of Alberta Libraries https://archive.org/details/science702albe_2 s> — Science 7 Module 2 STRUCTURES AND DESIGN r>GL- E>istaiice /diberia L.|W|1 Learning EDUCATION L -J) ACKNOWLEDGEMENTS This module has been based on Science Directions 7 b y John Wiley & S ons/Amold Publishing Ltd., 1989. Program consultant was Douglas A. Roberts. The author team for the complete text included Wilson C. Durward, Eric S. Grace, Gene Krupa, Mary Krupa, Alan J. Hirsch, David A. E. Spalding, Bradley J. Baker, and Sandy M. Wohl. Contributing author was Jean Bullard. Portions of Science Directions 7 h ave been used throughout the Module Booklet and have been adapted in a v ariety of ways. Cover photographs of Menzies LRT Bridge (1989), over North Saskatchewan River, Edmonton, Alberta, courtesy of Dave Mussell, Edmonton. Science 7 Student Module Module 2 Structures and Design Alberta Distance Learning Centre ISBN No. 0-7741-0232-2 ALL RIGHTS RESERVED Copyright ® 1 991 , t he Crown in Right of Alberta, as represented by the Minister of Education, Alberta Education 11160 Jasper Avenue, Edmonton, Alberta, T5K 0L2. All rights reserved. Additional copies may be obtained from the Learning Resources Distributing Centre. No part of this courseware may be reproduced in any form including photocopying (unless otherwise indicated), without the written permission of Alberta Education. Every effort has been made both to provide proper acknowledgement of the original source and to comply with copyright law. If cases are identified where this has not been done, please notify Alberta Education so appropriate corrective action can be taken. UNIVERSITY LIRRARY We Hope you ’CC e njoy your study of Science 7. Tb make your [earning a b it easier, a teacher toiCt beCp guide you through the materiabs. So zohenever you see this icon, f T L J turn on your audiocassette and Cisten. 1 i (Contents OVERVIEW 1 Evaluation 2 SECTION 1: A P ROBLEM 3 Activity 1: Building a B ridge 4 Conclusion 10 Assignment 10 SECTION 2: DEVELOPING A P LAN 11 Activity 1: Comparing Structures 12 Activity 2: Looking at Design 13 Activity 3: Function of Structures 14 Follow-up Activities 16 Extra Help 16 Enrichment 17 Conclusion 21 Assignment 21 SECTION 3: SCIENCE CAN HELP 23 Activity 1 : Comparing Materials 24 Activity 2: Stronger Shapes 29 Activity 3: Explaining Your Observations 32 Activity 4: Designs to Increase Beam Strength 38 Activity 5: Beams and Trusses 41 Activity 6: Constructing a P rototype Wood Frame Building 46 Activity?: Jointed Structures 50 Follow-up Activities 51 Extra Help 51 Enrichment 54 Conclusion 56 Assignment 56 Science 7 - M odule 2 SECTION 4: FINDING A S OLUTION 57 Activity 1: Building a P rototype 58 Follow-up Activities 63 Extra Help 64 Enrichment 66 Conclusion 68 Assignment 68 SECTION 5: MORE DECISIONS 69 Activity 1: Combining Designs 70 Activity 2: Other Considerations Regarding Design 76 Activity 3: Building Structures in Space 80 Follow-up Activities 85 Extra Help 85 Enrichment 87 Conclusion 88 Assignment 88 MODULE SUMMARY 89 APPENDIX 91 Glossary 93 Science 7 - M odule 2 1 OVERVIEW 7_ Turn to pages 74 and 75 of your textbook, Science Directions 7. The information Science and photographs on these pages introduces you to some of the things you will Directions study in this module. In Module 2 y ou will observe design in a v ariety of natural and human-built structures. You will determine what general patterns are present in the designs. You will look at the functions of the overall structures, along with the functions of individual components. In this module you will also have the opportunity to build some structures on your own. By planning and building your structures, you will learn how to work with real problems using a p roblem-solving method. Structures and Design Science 7 - M odule 2 2 Evaluation :i i| Your mark in this module will be determined by your work in the Assignment Booklet. You must complete all assignments. In this module you are expected to i complete five section assignments. The assignment breakdown is as follows: Section 1 A ssignment 17% Section 2 A ssignment 14% Section 3 A ssignment 22% Section 4 A ssignment 21% Section 5 A ssignment 26% TOTAL 100% il Science 7 - M odule 2