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This great "re-use it" activity will demonstrate how to transform a greeting card into a box. Once constructed, the box can have many uses like holding special notes or keepsakes.

In this up-cycling activity, learners recycle plastic bags and repurpose them into useful wallets.

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.

Learners make their own paper. They start by shredding old newspaper, clean toilet paper, and clean paper towels.

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

In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

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, learners discover why only some types of plastic can be recycled.

In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

In this activity on page 12 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners examine how recyclable materials are separated by various properties at recycling centers.

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

Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

Learners shred used paper, add water, and blend it into pulp. They then strain and roll the pulp out to make new paper.