A combination of dry erase linear 12/24 elapsed time rulers and conventional analogue clock face with a time table grid on reverse. The linear 12/24 hour analogue/digital elapsed time ruler enables students to calculate elapsed time in a simpler way by marking start and finish time using dry erase markers, therefore calculating start and finish time. 1 pack of 30 pupil linear elapsed time rulers which are 50 cm (length) x 4.5 cm (width) 1 teacher’s linear time rulers which are 110 cm (length) x 13.5 cm (width) 1 pack of 30 A4 time boards 1 A3 teacher’s time board Suitable for ages: 5+