Spatial Visualization
Spatial Visualization items test mental manipulation of shapes without moving them physically. On the NNAT3, you may be asked to identify a rotated figure, decide which pieces combine to form a target shape, or predict the result of folding or cutting. The key is to track distinctive features-an off-center notch, a long arm, a color patch-rather than trying to hold the whole figure in mind.
Core rules
- Rotation preserves size, shape, and handedness; reflection reverses handedness. A rotated figure never becomes its mirror image.
- Use an anchor feature. Follow one corner, tab, or colored region through the transformation.
- For combination items, match edges of equal length and check that no part overlaps unless the item shows overlap.
- For folding, reverse the fold in the same order; a hole through folded layers appears in every layer when unfolded.
Worked example
A figure is a vertical rectangle three units tall with a small square attached to its upper-right side. Rotate it 90 degrees clockwise. The rectangle becomes horizontal, and the small square moves from the upper-right end to the lower-right end. An answer with the square at the upper-right is the original orientation; an answer with the square at the upper-left is a reflection or a counterclockwise rotation. Track the square, not the outline.
Traps
- Choosing a mirror image when the item asks for a rotation.
- Rotating the outline but leaving an internal feature in place.
- Combining pieces along the wrong edge or overlapping them incorrectly.
- Unfolding a paper fold in the wrong order, producing too few or too many holes.