Grade 3+ illustrated reading story
The Floating Cargo Test
Read this free illustrated story, then open Story Garden for word help, narration, and a comprehension question.



- 1
Micah began a new project at the science tub.
- 2
The goal was to build a foil boat that carried marbles.
- 3
Before building, Micah sketched a plan and listed needed materials.
- 4
The first attempt showed a problem: wide boats folded under heavy cargo.
- 5
Micah felt disappointed, but treated the failure as useful evidence.
- 6
Micah invited his friend Suki to examine the design.
- 7
They measured carefully and discussed which part should change first.
- 8
Their revised plan used high sides and evenly spaced marbles.
- 9
They changed only one feature so the test would be fair.
- 10
The second attempt worked better, although it still needed adjustment.
- 11
Micah recorded the result instead of trusting memory.
- 12
A final improvement made the design safer and more reliable.
- 13
The team repeated the test to make sure the success was not luck.
- 14
This time, the project produced a boat that carried thirty marbles.
- 15
Micah labeled the model so others could understand each part.
- 16
Visitors asked thoughtful questions and suggested future experiments.
- 17
Micah discovered that strong projects grow through testing and revision.
- 18
The finished work was useful, but the learning mattered even more.
