1) Measure the diameter of one of the large orange buttons. Use a ruler to find the width across the middle!  2) How many wires are connected to the two boxes on the right-hand side? 3) There are 3 visible gears. If each one turns 8 times per minute, how many total turns will there be in 5 minutes? 4) Estimate the total length of all four glass fuses put together. Measure one, then multiply by 4! 5) You are given 50 cm of red wire. Measure the red wire in the image. Do you have enough to replace it? 

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