Garden Detectives · Case 12
The Spot on the Dock
Short O · Level 3
Cumulative Short O patterns and comparing possible explanations

Before reading
Open the case file
Hear the focus words
Read and investigate
The Spot on the Dock
Natural read-along narration · AmeliaPress Read with Amelia, or choose a sentence to begin.
A round green spot appeared on the little dock beside the pond. Dot wiped it with a cloth, but the next morning it was back. The spot was not moss because it had no soft texture. It was not paint because the cloth stayed clean.
Sam watched the dock at dawn. A frog hopped from a log and sat on the same spot. When the frog left, the green circle remained. Pip noticed drops of pond water around it.
Meg inspected the tree above the dock and found no dripping leaves. Then Dot saw sunlight pass through a green glass ornament by the pond. The curved glass cast a round green patch on the dock. As the sun moved, the bright spot moved as well.
The frog had only liked sitting in the warm light. Dot shifted the ornament to a safer hook. The green spot appeared on the path instead. The team solved a case made from light, not paint.
Check the evidence
Can you solve the case?
Choose the answer that is supported by the story.
What really happened?
Sunlight passing through a green glass ornament projected the moving spot.
For adults
Use evidence, not guesses
Ask the learner to point to the sentence that proves each answer. If decoding is effortful, reread one paragraph at a time. A fluent second reading is more valuable than rushing to the next story.