Robert Gardner 
Tundra Experiments [PDF ebook] 
14 Science Experiments in One Hour or Less

Award-winning author Robert Gardner comes to the rescue of busy students everywhere. Each experiment in this book follows the scientific method, and is designed to be completed in under an hour. Readers will discover why a tundra stays wet when it receives little rain, finding the energy (heat) is needed to melt one gram of ice, build a model of the permafrost, and the science of solar heat and leaf color. There are also ideas for more science experiments if you have extra time.