In the Surface Development Subtest, you will see irregular, flat shapes, such as pieces of paper or cardboard, and boxes created by folding these shapes; it will be your task to find out what lines on the flat shapes correspond to what lines on the boxes. In the flat shapes, like the ones shown below, the solid lines indicate the edges of the shape, and the dashed lines show you where it can be folded. An arrow on each flat shape and the respective box will help you to identify the orientation of the box relative to the shape.

To show you how the pattern folds to form the box, you can see the actual process by viewing this folding image (once image loads, click start or play to begin rotation - 1.5meg). Rotating images will only be available during the tutorial--not during the actual test.

A complete outline of the number of questions per sub-test and the maximum time allowed for each tutorial and sub-test is available.

In the sample tasks below, try to find out what letter(s) on the boxes correspond to each of the five numbers on the flat shapes.

Item 1: 1=B 2=H 3=E 4=H 5=J
Item 2: 1=H 2=G 3=H 4=D 5=A
Item 3: 1=V 2=I 3=O 4=C 5=X

For information on how to use your STB scores to qualify for our programs, please review the STB option for 5th and 6th graders and the for students in the 7th grade and above. Questions? Call (410) 735-6277 for more information.

You can also view sample items for the Visual Memory, Block Rotation and Perspectives subtests.

Last updated 12/4/2007

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