Tommy Tinker

I remember singing this song when I went to outdoor camp and acting out the part where Tommy sits on a red-hot clinker (a hot coal)!  It makes for a rousing round when four groups are standing with alarm and crying, "Ma! Ma!"
Sources: Zanzig, Augustus D.  101 Rounds for Singing. Published by World Around Songs Inc. p.19
Stephanie Trinneer from song sung in childhood.

Simama Kaa

Kedmon Mapana says this song in the Swahili language is taught in schools in Tanzania.  It teaches the words simama (stand), kaa (sit), and ruka (jump).
Source: Mapana, Kedmon.  March 2012 Northwest Kodaly Educator Workshop Notes

Shalom Chaverim

This Hebrew-language round is a lovely minor tune, and works well as a farewell song.
Source: Zanzig, Augustus D.  101 Rounds for Singing. Published by World Around Songs, Inc. p. 42

Sea Shell

This song could be used to imbed science concepts if performed as a rondo with sung, chanted, played, or spoken sections in-between about marine life.
Source: Zyzga, Helen.  Simple Gifts. p. 16

Laugh, Ha, Ha

A delightful four-part round.  I like to use it for an April Fools Day rondo with students supplying knock-knock jokes in between each repeat of the song.
Source: Zanzig, Augustus D.  101 Rounds For Singing Pub. by World Around Songs Inc. p. 17

Day is Done

This four-part round is beautiful to sing or play.
Source: Froseth, James.  Do it!  Play Recorder! p. 15

Buon Giorno

This is a three-part Italian round that is a good morning song.  
Source: Zanzig, Augustus.  101 Rounds for Singing, published by World Around Songs, Inc. p.7

Bow Wow Wow

I like to teach this song as a partner hand-clapping game.  It can become a mixer when partners switch places and jump to face a new partner on the rest.  It is good for preparing and presenting re.
Source: Ed. Erdei, Peter. 150 American Folk Songs to Sing, Read, and Play p. 18

Are You Sleeping? (Frère Jacques)

This four-part round can be sung in either English or French and is good for practicing fa.

Source: Zanzig, Augustus.  101 Rounds for Singing, published by World Around Songs, Inc. p. 40