The Length Reading Generator draws a centimeter or inch ruler with an object lying along it: marbles, a rock, a cube or a metal cylinder. You type the object’s length and where its left end sits, and students measure it, either lined up with 0 or starting partway along so they read both ends and subtract.
An inch ruler is read in fractions of an inch, marked down to halves, quarters, eighths or sixteenths, for measuring to the nearest quarter or eighth inch. A metric ruler can be marked in millimeters or only in centimeters, and read to the nearest mark or to one estimated digit past it. Magnifiers on the object’s ends keep the marks readable in print, and the answer key prints the length.
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Yes. Choose Imperial (in) and mark the ruler every 1/4 in. Lengths land on a mark and are read as fractions of an inch, so an object can be 3 1/4 in long. Mark it every 1/8 or 1/16 in for finer measuring.
Yes. Type where its left end sits, or drag the object along the ruler in the figure. Students then read both ends and subtract, and the answer key gives both ends as well as the length.
Yes. Under Ruler, choose Metric (cm) and mark it every 1 cm, then read to the nearest mark for whole centimeters. Mark it every 1 mm for lengths like 8.4 cm, or 84 mm.
A marble or a rock touches the ruler below its widest point, so its ends sit above the marks they line up with. The dashed lines drop from each end down to the ruler to show where to read.
Math Figures Length Reading Generator