While playing in her tree house, Jesse is intrigued by a falling sycamore seed that slowly spins to the ground. But when she sees acorns falling fast directly down to the ground, she must solve the riddle while learning about propellers and windmills and using technology to understand aerodynamics.
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The Secret in the Jelly Bean Jar
The Case of the Clicking Clock
The Microscopic Snot Debacle
The Mighty Lever Endeavor
The Clue in the Painted Pattern
The Hint in the Peeping Pupil
The Vexing Hectare Detector
The Conundrum of the Crooked Crayon
The Question of the Vomit Vortex : A Jesse Steam Mystery Solved through Science
The Case of the Clicking Clock : A Jesse Steam Mystery solved through Engineering
