Calling all Maker-kids! This STEM-based chapter book series stars engineering whiz Goldie Blox and her friends, the Gearheads! When Goldie Blox accidentally lets down her best friend, Ruby, she’s determined to make it up to her by throwing her BFF the best birthday celebration ever. But will Goldie be able to pull off her wildly complicated party–or will it all end in disaster? This 128-page early chapter book is a nonstop laugh-out-loud adventure perfect for future engineers.