Although choreographers may employ mathematical principles when creating dances, overt attention is seldom given to the mathematics by either the audience or the choreographer. We will examine the mathematical elements in several of the author's recently choreographed dances in which mathematical ideas were embedded purposefully and with the intent that the mathematics be at least somewhat visible to the audience. Two of the dances included elements of proofs, and all but one are part of the show “Harmonious Equations,” which premiered in 2008.