Abstract of INFO-MAC archived encoded Mac binary file 'edu/linear-systems-beams.hqx' Uploaded 12/23/2000 107734 bytes From: "Gary Smith" Subject: Linear Systems Beams Linear Systems Beams Middle-School (grades 5 through 9) math program written to provide skills in context. Students manipulate weights on two balance beams to solve two simultaneous equations. Go to www.polymathlove.com for more free programs.