Participants work in groups to develop pushing and probing questions about systems of equations.

(p. 289) Discovering Algebra: An Investigative Approach (Discovering Mathematics) by Jerald Murdock, Ellen Kamischke, Eric Kamischke

(p. 353) Prentice Hall Mathematics, Algebra 1 (Hardcover) by Allan E. Bellman, Sadie Chavis Bragg, Randall I. Charles, Basia Hall, William G., Sr. Handlin

(p. 411) Algebra 1 (Applications, Equations, & Graphs) by Ron Larson, Laurie Boswell, Timothy D. Kanold, Lee Stiff

(p. 687) Algebra: The University of Chicago School Mathematics Project by John W. McConnell, Susan Brown, Zalman Usiskin, Sharon L. Senk, Ted Widerski, Margaret Hackworth, Daniel Hirschhorn, Lydia Polonsky, Leroy Sachs, Ernest Woodward

click on smaller image to view the larger