Week 13 · Term Two · One inspectable crossing
Turn one harbor table into numbers a harbor master can check: a day range, a high-water gap, a grounded pontoon, a six-hour window, and a public brief that does not say the bridge has been built.
Monday keeps the 3.2 m range. Tuesday tests 5.0 − 3.6 at the tight hour. Wednesday marks 0.4 < 0.8 as a grounding. Thursday names six hours inside 1.2–3.0 m. Friday writes a brief a skeptical family can inspect.
20 minutes
Functions · A tide is a changing height
Treat a tide table as a changing function, and refuse to let one convenient stamp stand in for the day.
Make
A tide range card
Tide handoff: The range card is filed. Clearance is still open — a moving ocean is not yet a test under the deck.
25 minutes
Structures · Air gap at the dangerous hour
Subtract soffit minus high water, and refuse a low-tide gap as proof the span is clear.
Make
A high-water clearance card
Tide handoff: The high-water gap is filed. Footing is still open — a clear underside is not yet a usable approach when the water drops.
25 minutes
Risk · What grounds when the water leaves
Compare draft to low water, and keep a grounded pontoon off the all-hours path.
Make
A low-water footing card
Tide handoff: The grounding mark is filed. The crossing window is still open — a usable path is not yet a named set of hours.
20 minutes
Functions · Hours the crossing is honest
Count the hours that sit inside a named band, and refuse a twenty-four-hour crossing claim.
Make
A crossing window card
Tide handoff: The six-hour window is filed. Public writing is still open — a named window is not yet a recommendation a family can inspect.
25 minutes
Public writing · A recommendation families can check
Write a recommendation that uses this week’s numbers and states what the table still cannot prove.
Make
A Tidal bridge recommendation
Tide handoff: The tidal brief is filed. Term Two now has one inspectable crossing model — not a claim that the bridge has been built.
The brief uses only work entered here. It does not infer a built bridge, a tamed tide, grades, mastery, attendance, or accreditation.
