Your friend has just passed you a note so quietly during the class of your terrifying social studies teacher. As soon as it lands on your desk, your teacher snatches it away as if she had been waiting for that note to get to your desk. She opens it up and reads it aloud. You look around the classroom. You see the gang of kids who have been bullying you for a few days smiling very smugly. With a cross look on her face, your teacher gives you both detention. Jokes apart, imagine you grow up to be a bank programmer. What would happen if you wrote weak codes to keep the money safe? The solution? Learn coding from your early years. Introducing Can You Crack the Code written by Ella Schwartz and illustrated by Lily Williams!

This book will fill your brain with ideas to make and strengthen codes. You can teach these codes to your siblings or friends and talk to them in secret without anyone knowing. Maybe you are already using codes to contact your family in silence. But, what if your code is a weak one? With this book, you have absolutely no reason to worry about others discovering it. Did you know that codes were used as long ago as in the time of Julius Caesar? Codes were used ingeniously by the code makers of the time. This book shows how codes were developed over time, and in what cases they were used. The more advanced the code breakers get, the more advanced the code makers have to get. Codes were used in both World War I and World War 2. Cracking the Enigma (an encryption machine) had helped the allies (the British, French, the Soviet Union, and the United States) win World War 2. Today, codes are used in everyday life. For instance, when you type the password to your phone, you are using a code!

Ella Schwartz is a cyber-security warrior. She has written many more interesting books for children. She has studied engineering at Columbia University. She writes, works with the U.S. federal government on strategic technology initiatives, and trains for marathons. Until now, she has successfully run two marathons. If you want to find out more about Ella Schwartz and her books, visit her site: https://www.ellasbooks.com/books/