The Algorithm Collection Project (ACP)
Dr. Daniel C. Orey, California State University, Sacramento

The Algorithm Collection Project is to collect and disseminate alternative algorithms in mathematical problem solving. Participants gather and study the four basic operations (addition, subtraction, multiplication and division) in arithmetic. We are especially interested in the unique links between language and the algorithms we use to solve problems. Much of the data collected has been gleaned from interviews from newly arrived immigrant adolescent high school students to Northern California. We are extremely interested in learning how students may have learned and how students do:

• The basic arithmetic operations of addition, subtraction, multiplication and division;
• Memorization of basic facts;
• Algebra;
• Geometry