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Plastic waste, environmental pollution, a virus, that keeps the whole world in suspense – isn’t there one good thing left on earth? Can we create something good out of all this?  

In Greece, many schools, organizations and municipalities collect plastic lids from milk, juice, water, and shampoo or detergent bottles. They sell these collected lids to industries that use plastic in their production. With the money gained they can for example buy wheel chairs for persons in need. For one wheel-chair, approximately one ton of lids is needed.

Estimate the time needed to collect one ton of plastic lids, if all students of your school collect plastic lids for this purpose. How long would it take, if only you and your family collect lids? Propose other ways of managing this goal in a reasonable time duration.

This Worksheet is part of the Quartely Problem Series. For more quartely problems and other classroom materials, click here.

Picture Source: Image by Hans Moerman on Unsplash
CC-BY-NC-SA 4.0 licence granted

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Subject
Classroom Materials, Interdisciplinary teaching, Mathematics, QPsM
Year
2020
Topics
Inquiry-based learning, Reallife Problems, Diversity, Problem des Quartals
Guiding ideas /
Content-related competences
Number - Variable - Operation, Measuring
Grades
Lower Secondary
Author
Despina Potari, Katharina Flößer - International Center for STEM Education (ICSE)
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