From the reviews: "This book, intended for teachers, mathematics education researchers, and mathematicians, is about developing and teaching a curriculum for teaching fractions. ... the book describes three 'adventures' -- the adventure of the researchers while discovering and testing a curriculum for rational number learning, developed using the theory of didactical situations (Chapter 4), the adventure of the teachers implementing that curriculum (Chapter 3), and the adventures of the students experiencing that curriculum (Chapter 2)." (Annie Selden, MAA Reviews, February, 2014)

• 1. The Adventure of the Students.- 2. Viewing the Adventure from the Perspective of Teachers and Researchers.- 3. Some Key Concepts and Terms from the Theory of Situations.- 4. The Setting for the Adventure.- 5. Description of the Center for Observation for Research in Mathematics Education.- 6. Conclusions and future directions.

From the reviews: "This book, intended for teachers, mathematics education researchers, and mathematicians, is about developing and teaching a curriculum for teaching fractions. ... the book describes three 'adventures' -- the adventure of the researchers while discovering and testing a curriculum for rational number learning, developed using the theory of didactical situations (Chapter 4), the adventure of the teachers implementing that curriculum (Chapter 3), and the adventures of the students experiencing that curriculum (Chapter 2)." (Annie Selden, MAA Reviews, February, 2014)

• 1. The Adventure of the Students.- 2. Viewing the Adventure from the Perspective of Teachers and Researchers.- 3. Some Key Concepts and Terms from the Theory of Situations.- 4. The Setting for the Adventure.- 5. Description of the Center for Observation for Research in Mathematics Education.- 6. Conclusions and future directions.

From the reviews: "This book, intended for teachers, mathematics education researchers, and mathematicians, is about developing and teaching a curriculum for teaching fractions. ... the book describes three 'adventures' -- the adventure of the researchers while discovering and testing a curriculum for rational number learning, developed using the theory of didactical situations (Chapter 4), the adventure of the teachers implementing that curriculum (Chapter 3), and the adventures of the students experiencing that curriculum (Chapter 2)." (Annie Selden, MAA Reviews, February, 2014)

• 1. The Adventure of the Students.- 2. Viewing the Adventure from the Perspective of Teachers and Researchers.- 3. Some Key Concepts and Terms from the Theory of Situations.- 4. The Setting for the Adventure.- 5. Description of the Center for Observation for Research in Mathematics Education.- 6. Conclusions and future directions.