Teaching ladder LinkedIn Crossclimb #808: students solve 5 clues before touching order. Answers: FRET, FEET, FEEL, FUEL, FULL. Only then drag rungs until each neighbor differs by exactly one letter.
Middle phase answers: "Worry about something" = FRET; "Body parts treated by podiatrists" = FEET; "“I ___ Fine” (Beatles song)" = FEEL; "Material burned to create energy" = FUEL; "Completely stuffed after eating a meal" = FULL.
Ordering phase: the valid middle chain is FRET → FEET → FEEL → FUEL → FULL. This permutation is the only valid one-letter chain for these answers.
Rule demo: FREE and FRET differ in exactly one slot — E→T at the fourth letter (FREE → FRET).
Rule demo: FRET and FEET differ in exactly one slot — R→E at the second letter (FRET → FEET).
Rule demo: FEET and FEEL differ in exactly one slot — T→L at the fourth letter (FEET → FEEL).
Rule demo: FEEL and FUEL differ in exactly one slot — E→U at the second letter (FEEL → FUEL).
Rule demo: FUEL and FULL differ in exactly one slot — E→L at the third letter (FUEL → FULL).
Rule demo: FULL and FALL differ in exactly one slot — U→A at the second letter (FULL → FALL).
Lesson complete: FREE → FRET → FEET → FEEL → FUEL → FULL → FALL. Remember — middles first, order second, combo last.