kaplan gmat math foundations
Schoolyard Ecology
ISBN: , SKU: , AUTHOR: Barrett, Katharine / Willard, Carolyn, PUBLISHER: Great Explorations in Math & Science (Gems), In this series of outdoor, life-science investigations for grades 3-6, the schoolyard, is the environment to be investigated. Many ecological, environmental, and life science concepts are explored. Students learn biological sampling techniques; mapping and related mathematical skills are developed. In addition to temporarily collecting samples in "shake boxes," investigations focus on ants and spiders, and can be extended in many directions. Students learn that a bush may be home to a "community" of interacting plants and animals. Based on their observations and findings, students select a small area as their favorite location. Environmental writing about their favorite locations crowns the closing activity. This guide is designed to spark student curiosity about the patterns and interactions in nature, beginning with their immediate environment-the schoolyard. TABLE OF CONTENTS: Introduction Time Frame Activity 1 Exploring the Schoolyard Study Area Activity 2 Finding and Observing Spiders Tales from the Web Activity 3 Discovering Animal Communities Activity 4 Tracking Ants Activity 5 Special Study Sites Behind the Scenes Guide to small Common Schoolyard Animals Spider Web Identification key Resources Assessment Suggestions Literature Connections Summary Outlines "In this era of hype about hands-on activities, the school yard is too often given short shrift, except for occasional nature walks.... The book, a product of a team effort, underwent extensive tryout and review by teachers and specialists, and it shows."-"Science Books & Films," August/September "Overall this is a very thorough presentation of five excellentecological activities for children. This is the way science should be taught. The investigations encourage children to learn by "doing" and to discover for themselves how organisms interact with each other and their environment. The activities are also invaluable because they foster in children an appreciation and stewardship for other living things. If they can be taught to value spiders and ants, the rest will be easy."-"The American Biology Teacher," May
Eachine V-tail 210 FPV Drone P HD DVR
Descrizione prodotto Ottimo e bellissimo Drone Racer 210. Molto veloce e reattivo con la batteria 4S in dotazione. Product Specification: Size: 170mm*155mm*55mm Wheelbase: 220mm Take-Off weight: 570g Frame weight: 170g Flight controller: Cleanfilght SP Racing F3 EVO R Motor: KV ESC: 20A support 2s-4s propeller: Gemfan Bullnose Camera: CMOS and NTSC/PAL switchable HMDVR-HD: (H)x(V) Video transmitter: 5.8G 40ch 200mw OSD: Yes Battery: 4S MAh Product Description The Eachine V-tail 210 is a very cool FPV Racing drone. The unique shape and cool painting make it stand out from the crowd. With a new V-tail body design and carbon fiber material, it has superior ruggedness and anti-drop ability. The Eachine V-tail 210 based on SP RACING F3 EVO -- the new generation hardware platform, which can provide Jaw-Dropping Flight Performance. Internal ARM Cortex-M4 72Mhz CPU with Math co-processor (FPU) for efficient flight calculations that gets more done in less time. It means that the Loop times up to ~2x as fast as previous-generation STM32F1 based boards The Eachine V-tail 210 employed the acclaimed EMAX RS motor with Emax Lighting 20A ESC which running BLHELI latest firmware, so the aircraft has super-fast response and superior power, and bring you a very pleasant FPV flying experience. Items Specifications V-tail 210 FPV Drone Painting: Red & Blue or Black & Yellow Size: 170mm*155mm*55mm Wheelbase: 220mm Flight weight: 570g Frame weight: 170g RC inpu t: SBUS/PPM/DSM/DSM2/DSMX Compatible SP Racing F3 Flight controller CPU: STM32F303CPU,72Mhz inc FPU Accelerometer: MPU accelerometer/gyro/compass (connected via SPI) Barometer: BMP280 Micro SD card slot: SD/SDHC, up to 32GB Size: 23mm*28.5mm*5mm Weigt: 4g Firmware release: Cleanfilght SP Racing F3 EVO R Emax RS Motor KV: Configuration: 12N14P Diameter: 27.9mm Length: 31.7mm Shaft diameter: 3mm Weight(g): 29 Idle current(1
The Winters in Bloom
ISBN: , SKU: , AUTHOR: Tucker, Lisa, PUBLISHER: Atria Books, Kyra and David have been married for almost a decade and consider themselves happy - their home is comfortable, their jobs are stable, and their five year-old son, Michael, is simply perfect. Yet for reasons they've never fully shared with each other, the Winters have always been afraid that something will happen to the life they've created, and more importantly, to their little boy. David is a historian - he knows the past is inescapable, and yet he has spent fifteen years trying to escape the tragedy that ended his first marriage; trying to convince himself that if only he works hard enough, his new family will be safe. Kyra writes questions for a math textbook company; she loves puzzles and worships logic, yet she lives in fear of karma punishing her for the way she betrayed her sister, Amy, in college. After all, Amy was more than a sister - she was Kyra's only real family since their mother abandoned them as young children - and their estrangement weighs heavily on her conscience. So when Michael mysteriously disappears from his backyard one ordinary summer day, Kyra and David feel like the mistakes of their past have finally caught up to them. Each is convinced they know who has their son, but to find him, the Winters must embark upon an odyssey through time and memory. Their journey will involve David's mother, Sandra, who offers both her son and her daughter-in-law a path to understanding, and David's ex-wife Courtney, who lives just across town but in a universe away, where she struggles with the demons that caused her to lose everything she loved that fateful night fifteen years ago. It's only when a mysterious stranger enters their lives that they will discover it's not too late to become the kind of family they've always wanted to be--if only they can find a way to forgive themselves, and believe in the gift of a second chance. Lisa Tucker's most optimistic work since "Once Upon a Day, The Winters in Bloom "is a wise, life-affirming tale that is both poignant and surprisingly funny. Though the fast-paced, captivating story will keep readers turning pages, the novel's true power lies in its profound engagement with what it means to be alive: the mistakes we make, the price we pay, the fragility of human happiness but also the stubborn strength of the human heart.