Skill 25C
Longest and Shortest
Although your student certainly understands the meaning of shortest and longest, you'll notice that several of the pencils below are very close in length.  Here we want to determine if your student has the ability to visually determine (discriminate) small differences in the length of objects without using a ruler.

Which pencil is the longest?

a.
b.
c.
d.
Now tell me which pencil is the shortest.