Thomas, Rachael L.

Cryptology is the art and science of secret communication, and its purpose is to protect precious information and keep people safe. Learn about its building blocks: ciphers, codes, and keys.

Read about the historical code makers and breakers who protected their countries by coding and decoding messages for their governments, and the modern cryptologists who keep emails, texts, and online purchases secure.

Steganography is the art of concealing messages in plain sight. Read about invisible inks, the Cardano Grille, the use of microdots in WWI, and the butterfly maps of Lord Baden-Powell.

"Cryptology was key to the success of the Battle of Iwo Jima during World War II. Learn more is this introduction the Navajo and why and how their language was well-suited to being used for coded messages"--Provided by publisher.

"What kinds of robots can be found in space, and what do they do? Help readers learn all about how robots are used in outer space with informative, engaging text and stunning photographs straight from space experts."--.

If you could design a haunted house what would be inside? Would a monster lurk under the bed? Would the walls have eyes? With Make a Haunted House Your Way! young makers will use the makerspace tools to learn how to get inspired problem solve and collaborate with others as they create their haunted house.

If you could design a haunted house, what would be inside? Would a monster lurk under the bed? Would the walls have eyes? With Make a Haunted House Your Way! young makers will use the makerspace tools to learn how to get inspired, problem-solve, and collaborate with others as they create their haunted house. Colorful images and engaging sidebars, along with guiding prompts and advice, will help.

Provides step-by-step instructions for five three-dimensional origami projects.

"This title examines the efforts of healthcare workers during the COVID-19 pandemic such as working with an unknown pathogen, PPE and equipment shortages, having to quarantine away from family, and Post Traumatic Stress Disorder. Aligned to Common Core Standards and correlated to state standards. Checkerboard Library is an imprint of Abdo Publishing, a division of ABDO."--.

"Kids will discover how sea stars influence their ecosystems. Young readers will learn where sea stars live and how they affect their environment, their role in the food web, and the dangers they face"--Provided by publisher.