Everyone loves a good scare, and Scary Science shows why. Digging deep into spine-chilling tales of horror, it teaches the truly fascinating science underlying the terror, taking the reader on a tour of that zone where reality meets all things weird and terrifying.
martes, 12 de marzo de 2013
This collection of challenging and engaging hands-on science problems is perfect for homework, warm-ups, and for extending and enriching any science program This book contains 144 daily problems, 36 weekly puzzlers (more like invetigations), teacher notes, solutions, and charts that cross-reference problems to the National Science Eduaction Standards..
lunes, 11 de marzo de 2013
Discusses the composition and states of water, its importance for human beings, how humans get water, how humans are polluting the water supply, the effects of this pollution and strategies that would help with this problem.
Discusses the composition of air, its importance for human beings, how humans are polluting the air with fossil fuels and greenhouse gases, the effects of this pollution and strategies that would help with
viernes, 8 de marzo de 2013
Narra una historia verídica de adolescentes emprendedores. Describe la energía vivificante del primer amor y de los grandes anhelos de juventud. Motiva a reforzar ideales, a terminar con libertinajes y a reencontrar los principios éticos.