Because the Naglieri is a nonverbal test, meaning it does not contain words, it is ideal for testing speakers of various languages without discrimination. But a nonverbal test may be new to your child, so some exposure to the test ahead of time will help them to feel prepared. There are websites where you can download practice test questions to help prepare your child for the test format.
The NNAT tests spatial reasoning; patterns, relationships between shapes and the rotation and transference of different shapes. Use plastic tangram pieces with your child to create different shapes and pictures. Lay out lots of different shapes in a pattern and ask your child to guess which shape will come next. Let your child create patterns for you to guess as well. Do these activities often in the months leading up to the test, but keep it fun and enjoyable.
Lots of puzzle experience can really build your child's spatial reasoning skills. More challenging puzzles, such as solid colored images or large multi-piece puzzles, can really build these skills. There are online puzzle games that flip, rotate and change the position of pieces, and then show a puzzle and ask your child to guess which piece will fit in the space from a few choices. These games are fun and will improve your child's puzzle skills.
Purchase books that encourage your child to complete math analogies. Using analogous reasoning with spatial information will get your child well-prepared for the NNAT. You can do simple analogies while driving in the car, or waiting for an appointment. Ask your child "5 is to 25 as 25 is to____?" This kind of thinking will benefit your child in preparing for the NNAT and in future math study.
The test itself will be short, usually just 30 minutes of actual test time. Remind your child that the test is important, and that she needs to stay focused and do her best. Make sure your child is well rested and has had a healthy breakfast.