var fDesc=new Array(); fDesc[0] = "Testing the mental computation of results of additions and subtractions, of a missing number in additive sentences with numbers less than 20.

1 2 3... Cabri wants to greet you:
- Students, grasp maths at your own pace, according to your own needs
- Teachers, engage your students with highly interactive resources that are aligned with the national curriculum."; 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 = ''; } }