Should We Build a Dam?


Brandon DeBritzby Brandon DeBritz

A Junior High STEM Exploration into Hydroelectric Energy with the use of the PowerWheel

When we talk about electricity and where it comes from in the Pacific Northwest, hydroelectric energy production is a key source and natural opportunity for teaching.  Part of the curriculum used in the South Kitsap School District in Port Orchard, WA is SEPUP ‘Weathering and Erosion’.  Students explore the Earth processes of weathering, erosion, and deposition all the while considering where to expand residential development in an expanding fictional town along the northwest coast.

This year, students at Cedar Heights Junior High were presented with a new factor to consider for this situation, ’should we build a dam on the town’s river to provide energy for the expanding electrical needs of the city?’ This new situation opened the door for a STEM unit, ‘The Energy of Moving Water’ from the National Energy Education Development (NEED) Project (free teacher and student curriculum guides are available from their website  www.need.org).

From this platform, students were engaged in activities and research to explore: what electricity is and how it is created, the designs of a hydroelectric dam and how they work, as well as many of the environmental, economic, social, and political issues around the construction and use of dams. Through a school partnership with RB Industries and the PowerWheel, students explored the fundamental elements of creating electricity through the transfer of moving water. 

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Hovercraft Addition – Collisions!


by:  Jim Fiddes

I recently used this extension of the balloon-CD hovercraft plans in Norm Barstow’s blog for a middle school physical science lab, but it could be easily adapted for a high school IPS class. It works as inquiry for higher-achieving students, but just as well with more detailed direction, for regular classes.

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UV Radiation Activity


Tami O'Connor, Educational Innovationsby: Tami O’Connor

The sun is our primary source of ultraviolet radiation, however, there are a number of artificial sources of UV light including black lights, tanning beds and mercury vapor lamps. Ultraviolet radiation is usually considered to be a bad thing for very good reasons.

Generally speaking, there are three types of UV radiation here on Earth: UVA, UVB and UVC. Though the most destructive, UVC is almost never seen in nature because the earth’s atmosphere absorbs all of it. Though less destructive, overexposure to UVB can lead to all kinds of maladies including sunburn, some forms of skin cancer and cataracts. Read the rest of this entry »


Building a Hovercraft Science Project


Norm Barstow, Educational InnovationsLook, Mom, No Wheels!  Building a Hovercraft Science Project

by:  Norm Barstow

The first practical design of the hovercraft was completed in the late 1950’s by British engineer, Sir Christopher Cockerell.  Since then, the continued development of this invention has been ongoing, and currently, the hovercraft is being used commercially, by the military, and for personal use.  Teachers have been constructing versions of the hovercraft using balloons, film canisters and flat materials in classrooms for years.

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Surface Tension Demonstrations


Tami O'Connor, Educational InnovationsWe Water Molecules Stick Together! | Surface Tension Demonstrations

by: Tami O’Connor

I am a believer that observing discrepant events burns concepts into students’ memories far longer than simply reading the facts of the lesson from a text book.  A few years ago I was designing a unit on surface tension.  Because so many awesome hands-on activities deal with this topic, my greatest problem was picking and choosing!  In this blog, I will describe one of my students’ favorite surface tension demonstrations.  It teaches about surface tension and capillary action.

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