R is for Rot (continued)
Put the lid on the can and place the can in a sunny spot where there is good air circulation. Add more layers as you collect wastes, trying to keep the proportions of yard and food materials roughly equal. (Do not fill the can more than 3/4 full.)
Use a pitchfork or other garden tool to mix the layers regularly. This will speed up the decomposition process and keep the can from producing foul odors. Have students record in a journal (both drawing and text)
what is going on inside their composter as the weeks pass.
In as little as 3 weeks, your compost might be ready to use. Good compost will be dark and crumbly. Use the compost in a school garden, or give each student a bag- ful to bring home to their families.
Review with students the role of decomposers in a food chain and in an ecosystem.
shredded food waste shredded yard waste
organic soil shredded food waste shredded yard waste
Q IS FOR QUARK: A Guide for Teachers
Based on the book Q is for Quark: A Science Alphabet Book
by David M. Schwartz Illustrated by Kim Doner
Q is for Quark: A Guide for Teachers written by Sarah Martin Illustrations © 2001 by Kim Doner from the book Q is for Quark: A Science Alphabet Book Additional art by Brian Hogg Science consultant: Susan Highlund
9 781582 460499
© 2001 by Tricycle Press
We hope you enjoyed this guide. If you would like to purchase additional copies of either the teachers’ guide or Q is for Quark: A Science Alphabet Book, please write us at: Order Department, P.O. Box 7123, Berkeley, CA 94707 or call 1(800) 841-2665, or visit us online at www.tenspeed.com.