<p>Ingrid Munson</p><p>Grade 7 Structural Strength & Stability</p><p>DESIGN CHALLENGE: Use as few straws as possible to create a tower that is strong enough to support a full cup of water.</p><p>DESIGN SPECS:  You will be working in teams of 3 to complete the challenge.  The tower must support a full cup of water at least 5 cm above the test surface  The design can be tested as it is being built but you may only use a half cup of water for your tests</p><p>MATERIALS  1 paper cup  10 straws  straight pins to join the straws together – use the sewing ones, as the heads will be easier to find rather than the straight pins  Ruler</p><p>You will have access to water and to the test “facility”.</p><p>You will have 10 minutes to complete the challenge.</p><p>Good luck!</p><p>Additional Resources: http://www.octe.on.ca/ for additional technology ideas http://wvteched.k12.wv.us/resources/activities/index.php another great website for technology ideas</p><p>Idea from: Robert Moulder HDSB</p>