Student Elapsed Time Rulers 10 Set Environmentally friendly Fiber Particulate Composite (FPC) working bell UPC 194629010158 working bell distractions out and helps to prevent wandering eyesComes with enough dividers to create 4 stations or 6 stations48" diameter x 14"HRecycled and recyclable Elapsed time and duration of time subjects are difficult for students to grasp and digital clocks only make it harder as students are failing to adequately learn to tell time using analog clocksThe Elapsed Time Ruler was created to address this difficulty and help teachers instruct students on elapsed time and duration of time questionsThe student version of the Elapsed Time Ruler is designed to interlock at each side marked "midnight" to create one continuous time lineStudent version is laminated on the front to allow the use of dry erase markers to mark the beginning and ending times if neededThink of this time tool as an analog clock unwound into a 24 hour format with A write on wipe off time tool allows students to measure and teachers to demonstrate time in a number line format where they can visually see where the time goes