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COPYRIGHTED MATERIAL Chapter 4: Jean Piaget 77 Biography Piaget’s Theories Piaget in the Twenty-First Century Discussion Questions Suggestions for Further Reading Chapter 5: Lev Vygotsky 99 Biography Vygotsky’s Theories Vygotsky in the Twenty-First Century Discussion Questions Suggestions for Further Reading Glossary 117 References 121 Index 125 About the Author 133 viii COPYRIGHTED MATERIAL