var fDesc=new Array(); fDesc[0] = "Expedition Atlantis presents mobile robot math problems in a highly scaffolded and contextualized manner. The game is designed so that students focus on learning mathematical strategies without having to worry about the nuances of programming. Expedition Atlantis rewards students for mathematical solutions, and the tools provided in this teacher guide are designed to generalize students’ proportional reasoning skills by the end of the game."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }