Established authors Alison Warr‎,‎ Cathy Curtis‎,‎ and Penny Slingerland have produced class‎-tested first editions written to speak to the challenge of the NCTM and AMATYC Standards and technology integration in the classroom‎,‎ the authors use the following means to address the standards‎:‎ * Numerical‎,‎ Graphical‎,‎ and Algebraic Models‎:‎ The exposition usually begins by synthesizing the concepts discovered in the activity sets‎.‎ Concepts are presented through non trivial applications‎.‎ Mathematical models are presented numerically‎,‎ graphically‎,‎ and algebraically with an emphasis on the connection among the three representations‎.‎ * Guided Discovery Activities‎:‎ Students discover concepts and strategies through guided activities‎.‎ Co‎-operative learning teams are used to facilitate understanding and improve communication‎.‎ * Problems Solving‎:‎ Students are expected to communicate their ideas‎,‎ processes‎,‎ and understanding orally and in writing‎.‎ * Collaborative Learning‎:‎ The problem sets include skill building problems‎,‎ conceptual questions‎,‎ and appli‎.‎‎.‎‎.‎