Can't find the calculator? 
Ruler gone missing? 
Have no fear, come to this page for helpful interactive tools right at your fingertips!
Link to calculator: http://homepage.ntlworld.com/g.jennings/mrjennings/teacher/maths/giantcalc800x600.htm
Link to ruler: http://www.myonlineruler.com/
Link to clock: http://www.time-for-time.com/swf/myclox.swf
Link to timer: http://classtools.net/education-games-php/timer/