Analysis of costs and benefits is a critical aspect of decisions about technology.ĭesign, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversity.ĭesign, evaluate, and refine a solution to a complex real-world problem, based on scientific knowledge, student-generated sources of evidence, prioritized criteria, and tradeoff considerations. New technologies can have deep impacts on society and the environment, including some that were not anticipated. When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts. Scientists and engineers can make major contributions by developing technologies that produce less pollution and waste and that preclude ecosystem degradation.Īlignment agreement: Thanks for your feedback! When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts.įeedback (negative or positive) can stabilize or destabilize a system.Īlignment agreement: Thanks for your feedback! Engineers continuously modify these technological systems by applying scientific knowledge and engineering design practices to increase benefits while decreasing costs and risks.Įvaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts.Įvaluate a solution to a complex real-world problem, based on scientific knowledge, student-generated sources of evidence, prioritized criteria, and tradeoff considerations. This activity focuses on the following Three Dimensional Learning aspects of NGSS:ĭesign or refine a solution to a complex real-world problem, based on scientific knowledge, student-generated sources of evidence, prioritized criteria, and tradeoff considerations.Īlignment agreement: Thanks for your feedback! Understand the steps of the engineering design process.Įvaluate or refine a technological solution that reduces impacts of human activities on natural systems.Ĭlick to view other curriculum aligned to this Performance Expectation.Provide qualitative and quantitative results that describe the success (or failure) of a model filtering system in meeting the project objectives.Develop and test a model for an innovative and efficient water filtration system, and recover resources.The removal of plastic from a water source is a new challenge for engineers, given the fact that plastic is not soluble nor magnetic and varies in its size and decomposition state.Īfter this activity, students should be able to: Filters and settling are common mechanical processes used to remove large particles from raw wastewater. They use a variety of stages and processes to remove solids and contaminants from wastewater, including biological and mechanical processes. This engineering curriculum aligns to Next Generation Science Standards ( NGSS).Ĭopyright © 2017 SHIFTED RET Program, University of Kansas Lawrence and GreenbushĮnvironmental engineers design wastewater treatment plants to clean water before discharging into rivers, streams, lakes and seas. They conduct common water quality tests (such as turbidity, pH, etc., as determined by the teacher) to check the water quality before and after treatment. They design and build the filtering systems, redesigning for improvement, and then measuring and comparing results (across teams): reclaimed quantities, water quality tests, costs, experiences and best practices. They aim to remove the water contaminants while reclaiming the waste material as valuable resources. Drawing from assorted provided materials (gravel, pebbles, sand, activated charcoal, algae, coffee filters, cloth) and staying within a (hypothetical) budget, teams create filter systems within 2-liter plastic bottles to clean the teacher-made simulated wastewater (soap, oil, sand, fertilizer, coffee grounds, beads). Student teams design and then create small-size models of working filter systems to simulate multi-stage wastewater treatment plants.
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