Teaching ladder LinkedIn Crossclimb #778: students solve 5 clues before touching order. Answers: BOLT, BELT, BELL, BOLD, CELL. Only then drag rungs until each neighbor differs by exactly one letter.
Middle phase answers: "Run away suddenly, or last name of retired sprinter Usain" = BOLT; "Leather strip worn around the waist" = BELT; "What one might ring on someone's porch to get them to the door" = BELL; "Font style to draw attention" = BOLD; "Basic building block of life (all organisms have at least one)" = CELL.
Ordering phase: the valid middle chain is CELL → BELL → BELT → BOLT → BOLD. This permutation is the only valid one-letter chain for these answers.
Rule demo: CALL and CELL differ in exactly one slot — A→E at the second letter (CALL → CELL).
Rule demo: CELL and BELL differ in exactly one slot — C→B at the first letter (CELL → BELL).
Rule demo: BELL and BELT differ in exactly one slot — L→T at the fourth letter (BELL → BELT).
Rule demo: BELT and BOLT differ in exactly one slot — E→O at the second letter (BELT → BOLT).
Rule demo: BOLT and BOLD differ in exactly one slot — T→D at the fourth letter (BOLT → BOLD).
Rule demo: BOLD and FOLD differ in exactly one slot — B→F at the first letter (BOLD → FOLD).
Lesson complete: CALL → CELL → BELL → BELT → BOLT → BOLD → FOLD. Remember — middles first, order second, combo last.