ShortGarden Detectives · Case 30
The Knock at the Potting Shed
Short O · Level 5
Cumulative Short O patterns with sound timing and vibration evidence
Before reading
Open the case file
Hear the focus words
Read and investigate
The Knock at the Potting Shed
Read one sentence at a time, then reread for smooth phrasing.
A soft knock came from the potting shed every few minutes. Dot checked the door, but no one stood there. The knock happened only when the water tap was on. Inside, a hose ran past a stack of pots.
One loose loop rested against a hollow box. When water rushed through the hose, the loop grew stiff. It lifted from the floor and tapped the box. The box made the small tap sound like a firm knock.
Dot placed a folded cloth between the hose and box. The next rush of water made no sound. She clipped the hose to the wall and moved the box. The pots remained still through the test.
Dot marked the time of one final tap cycle. The regular knock was explained without opening any locked door.
Check the evidence
Can you solve the case?
Choose the answer that is supported by the story.
What really happened?
Water pressure stiffened a loose hose loop, which tapped a hollow box and created the regular knocking sound.
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.