The Salt-Stained Ledger

Students sequence an investigative timeline from multiple timestamps and argue which window of time accounts for the salt damage.

Student Name: ______________________

Grade Band: Grades 6-8

Words

timeline. an ordered record of events showing what happened first, next, and last Example: Nia built a timeline from the checkout slip and the weather bell.
residue. a thin layer of salt or grit left behind after water dries Example: White salt residue encrusted the bottom corner of page eight.
interval. the period of time between two recorded events Example: The thirty-minute interval between 5:30 and 6:00 p.m. is the key window.
verify. to confirm a time or detail using a written record Example: Omar asked Jun to verify when the ledger was still dry.
conclude. to reach a reasoned judgment supported by the timeline Example: We can conclude the ledger went outside during the 5:30 squall.
alibi. proof that a person was somewhere else when an event happened Example: The 4:45 sign-out receipt gives the morning clerk a clear alibi.

Speaking plan

Deliver a chronological argument that sequences the 5:15, 5:30, and 5:50 p.m. evidence to narrow the exposure window and exonerate the morning clerk.

Establish the 5:15 p.m. baseline inspection.
Connect the 5:30 p.m. squall and unlatched balcony to the 5:50 p.m. discovery.
Conclude why the morning clerk's 11:00 a.m. return is ruled out.

Writing plan

Write the timeline brief for Detective Voss. Sequence the afternoon timestamps (5:15, 5:30, and 5:50 p.m.) to prove when the salt residue formed and why the morning clerk could not be responsible.

Order the 5:15, 5:30, and 5:50 p.m. events using sequence markers.
Cite the 5:15 p.m. dry inspection sentence.
Use causal connectors to explain how the timeline clears the morning clerk.

Guided frames

First, at 5:15 p.m., Jun confirmed that page eight was dry.
Next, at 5:30 p.m., ___.
Because the page was dry at 5:15 p.m., the morning clerk ___.

Drafting & Evidence Sketch Space