An instant USA Today and Wall Street Journal bestseller 

The newest picture book from the creators of Iggy Peck, Architect; Rosie Revere, Engineer; and Ada Twist, Scientist stars Sofia Valdez, a community leader who stands up for what she believes in 

Every morning, Abuelo walks Sofia to school . . . until one day, when Abuelo hurts his ankle at a local landfill and he can no longer do so. Sofia (aka Sofi) misses her Abuelo and wonders what she can do about the dangerous Mount Trashmore. Then she gets an idea--the town can turn the slimy mess into a park She brainstorms and plans and finally works up the courage to go to City Hall--only to be told by a clerk that she can't build a park because she's just a kid Sofia is down but not out, and she sets out to prove what one kid can do. 

Collect them all Add these other STEM favorites from #1 New York Times bestselling team Andrea Beaty and David Roberts to your family library today 

Rosie Revere, Engineer 
Iggy Peck, Architect 
Ada Twist, Scientist 
Rosie Revere and the Raucous Riveters 
Ada Twist and the Perilous Pants 
Ada Twist's Big Project Book for Stellar Scientists 
Iggy Peck's Big Project Book for Amazing Architects 
Rosie Revere's Big Project Book for Bold Engineers 
Questioneers Family Calendar