7 / 66
CONTENTS
1. Childhood Fascination
7
2. Introducing Twitter
21
3. Inventing Square
33
4. Climbing Higher
47
Find Out More
59
Series Glossary of Key Terms
60
Index
62
About the Author and Picture Credits
64
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7 / 66
7 / 66
CONTENTS
1. Childhood Fascination
7
2. Introducing Twitter
21
3. Inventing Square
33
4. Climbing Higher
47
Find Out More
59
Series Glossary of Key Terms
60
Index
62
About the Author and Picture Credits
64