Introduction:
This lesson will be the introduction for the 8th grade bridge unit. Through the videos and other computer resources the students should have a basic understanding of how bridges work.
Group Size: Any
Learning Objectives:
The students will be able to identify 4 types of bridges.
The students will be able to list the major materials involved in bridge construction
Guiding Question:
In the 1940s the Tacoma Narrows bridge, also known as "Galloping Gurdy" collapsed. What kind of bridge was this and why did this happen?
Materials:
Discovery- Understanding Bridges
http://player.discoveryeducation.com/index.cfm?guidAssetId=974C3630-156E-4809-9A2E-
B81171AEB0B3
PBS- Building Big
http://www.pbs.org/wgbh/buildingbig/bridge/
West point bridge builder
http://bridgecontest.usma.edu/
Procedures:
Show students the Discovery video on understanding bridges. This is broken up into 5 parts. Stop between each section for discussion.
The following day use the PBS design challenge and the west point bridge program
Assessment:
Students will build a bridge out of tooth picks that will hold a minimum of 20 lbs.
Answer Key or Rubric:
none
Benchmark or Standards:
Standard 5 for technology-
Students
will use mathematical analysis, scientific inquiry, and engineering
design, as appropriate, to pose questions, seek answers and develop
solutions.