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The Chinese invented paper made from plants and cloth about 2,000 years ago. Learners follow a similar process to make paper from recycled paper.

In this activity, learners will reuse plastic bags in an interesting way.

In this activity, learners take apart a used zinc-carbon dry cell battery.

In this activity, learners collect, categorize, weigh and analyze classroom trash and discuss ways that engineers have helped to reduce solid waste.

In this activity on page 11 of the PDF, learners follow simple steps to recycle old newspaper into new paper.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.