This cross curricular versatile class kit comprises teacher and pupil plastic dry wipe boards, suitable for measuring, comparing, adding and subtraction temperature, weight and time. Use the durable plastic Elapsed Time rulers to compare analogue/digital time, intervals of time, continuous and elapsed time for 12/24hrs. The folding Meter/imperial rulers measure length/height in any direction. Kit comprises 30xA5/1xA2 Weight boards, 30xA5/1xA2 Measurement boards, 30xA4/1xA2 Time Boards, 5 x Folding Metre Rulers, 6 x Pupil Elapsed Time Rulers, 1 x Demonstration .