Students use everyday building materials sand, pea gravel, cement and water to …
Students use everyday building materials sand, pea gravel, cement and water to create and test pervious pavement. They learn what materials make up a traditional, impervious concrete mix and how pervious pavement mixes differ. Groups are challenged to create their own pervious pavement mixes, experimenting with material ratios to evaluate how infiltration rates change with different mix combinations.
Engineers design and implement many creative techniques for managing stormwater at its …
Engineers design and implement many creative techniques for managing stormwater at its sources in order to improve and restore the hydrology and water quality of developed sites to pre-development conditions. Through the two lessons in this unit, students are introduced to green infrastructure (GI) and low-impact development (LID) technologies, including green roofs and vegetative walls, bioretention or rain gardens, bioswales, planter boxes, permeable pavement, urban tree canopies, rainwater harvesting, downspout disconnection, green streets and alleys, and green parking. Student teams take on the role of stormwater engineers through five associated activities. They first model the water cycle, and then measure transpiration rates and compare native plant species. They investigate the differences in infiltration rates and storage capacities between several types of planting media before designing their own media mixes to meet design criteria. Then they design and test their own pervious pavement mix combinations. In the culminating activity, teams bring together all the concepts as well as many of the materials from the previous activities in order to create and install personal rain gardens. The unit prepares the students and teachers to take on the design and installation of bigger rain garden projects to manage stormwater at their school campuses, homes and communities.
Lesson Length: 1-2 hoursGrade Level: 6-8Students build a water filter with a …
Lesson Length: 1-2 hoursGrade Level: 6-8Students build a water filter with a variety of natural and commercially produced materials. First they test the materials and then choose which to layer together themselves based on material performance. Students learn about water resources and engineered supports for the earth’s water systems and the impacts on environmental and human health. Engineering connections are highlighted throughout the lesson. Special thanks to Giles County, VA STEM Coordinator, Christina Martin, whose unit on The Global Water Crisis was the inspiration for this lesson. Also thanks to the NASA Water Filtration Challenge (https://www.jpl.nasa.gov/edu/teach/activity/water-filtration-challenge/) that helped guide Christina in the development of her lesson.This material is based upon work supported by the National Science Foundation under Grant No. 1657263. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Lesson Length: 1-2 hoursGrade Level: 6-8Students learn about relationships between earth and …
Lesson Length: 1-2 hoursGrade Level: 6-8Students learn about relationships between earth and space including elements of our solar system, gravity, escape velocity, and space exploration though a breakout box experience. They solve clues about space and conditions needed to support life on a planet and perform tests related to space travel. Clues for opening locks on the breakout box are purposefully challenging to simulate the struggle engineers often grapple with when problem solving.This material is based upon work supported by the National Science Foundation under Grant No. 1657263. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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