Extend the Launch of Activity 1, “A Book Drive,” by continuing the discussion about the book drive. Introduce the statement “reduce, reuse, and recycle,” and ask students what they think it means. Share responses. Explain that “reduce, reuse, and recycle” are three principles for taking care of the planet and using resources wisely. Ask what students think each principle means, and to give examples: 

• Reduce means to use fewer things and to consume less, such as carrying water in a thermos instead of buying plastic bottles of water.
• Reuse means to repeatedly use an item, such as a cardboard box or a glass jar instead of throwing it away after one use.
• Recycle means to make a new product out of old material, such as turning old cardboard into new boxes or making a bird feeder out of an old milk carton.

Ask students to identify the principle that the book drive is an example of (reuse). Emphasize that the principles “reduce, reuse, and recycle” are listed in order of how helpful each is to the planet, from most to least.