Teaching ladder LinkedIn Crossclimb #878: students solve 5 clues before touching order. Answers: SODA, CODA, CODE, BODE, BODS. Only then drag rungs until each neighbor differs by exactly one letter.
Middle phase answers: "Carbonated water" = SODA; "Element at the end of a song" = CODA; "Do a programmer's job" = CODE; "Be an omen" = BODE; "Physiques, colloquially" = BODS.
Ordering phase: the valid middle chain is SODA → CODA → CODE → BODE → BODS. This permutation is the only valid one-letter chain for these answers.
Rule demo: SOFA and SODA differ in exactly one slot — F→D at the third letter (SOFA → SODA).
Rule demo: SODA and CODA differ in exactly one slot — S→C at the first letter (SODA → CODA).
Rule demo: CODA and CODE differ in exactly one slot — A→E at the fourth letter (CODA → CODE).
Rule demo: CODE and BODE differ in exactly one slot — C→B at the first letter (CODE → BODE).
Rule demo: BODE and BODS differ in exactly one slot — E→S at the fourth letter (BODE → BODS).
Rule demo: BODS and BEDS differ in exactly one slot — O→E at the second letter (BODS → BEDS).
Lesson complete: SOFA → SODA → CODA → CODE → BODE → BODS → BEDS. Remember — middles first, order second, combo last.