First recorded by Johnny Mathis (MOR #36 1972).
Hit versions by Al Wilson (US #1/R&B #10/UK #51 1973), Peabo Bryson (R&B #1 1989).
From the wiki: “‘Show and Tell’ was written by Jerry Fuller and first recorded by Johnny Mathis in 1972. Released as a single, it peaked at #36 on Billboard’s easy-listening music chart. A 1973 recording of the song by Al Wilson reached #1 on the Billboard Hot 100 for one week in January 1974 and was also named a Cashbox Magazine Number One Single of the Year.
“Peabo Bryson had a #1 R&B hit with his version of the song in 1989, but did not chart on the Billboard Hot 100.”
Al Wilson, “Show and Tell” (1973):
Peabo Bryson, “Show and Tell” (1989):