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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air. They place the collectors in various test sites and observe them over a...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing. Learners also discover that changing...

    $1 - $5 per group Ages 11 - 18 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online. They collect data over a period of days or weeks and look...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners develop an understanding of air pressure in two different activities. They model the magnitude of air pressure as gravitational force per unit area, and they use cookie wafers to model how...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners investigate stress and strain by designing, building, and testing beams made from polymer clay. They compete to find the best beam strength to beam weight ratio, and learn about the trade...

    $1 - $5 per student Ages 11 - 18 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas. The CO2 gas is trapped in a balloon, then blown through a straw into water with an acid...

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport. When polluted water evaporates, the pollutants remain behind, becoming...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners play the role of materials engineers as they test the flexibility of different materials. They determine the strength-to-weight ratio of bars of these materials (e.g., steel, aluminum,...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners see convection currents in action in this highly visual demonstration. Sealed bags of colored hot or cold water are immersed in tanks of water. When the bags are punctured with pinholes,...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    In this activity, learners collect, categorize, weigh and analyze classroom trash and discuss ways that engineers have helped to reduce solid waste. Learners make predictions on the types of trash...

    $1 - $5 per group Ages 8 - 11 1 to 2 hours

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