Measuring Angles with Origami Crease Patterns
How can origami help your students measure angles?
Children naturally enjoy creative activities such as folding paper models from squares. These activities show you how to make use of origami crease patterns (the designs that appear when you unfold a model) to give your students practice measuring and adding angles.
Crease patterns include some intriguing mathematical properties that your students will want to investigate. For example, when folds intersect creating a group of angles around an interior vertex, the sum of these angles is always 360 degrees. Or is it? Hmm, your students will have to measure and total loads of angles to find out.
Additionally, if you number the angles surrounding an interior vertex sequentially, the even numbered angles will have a sum total of 180 degrees. These are some of the fascinating characteristics of origami crease patterns which will have your students folding models full of angles, unfolding those same models, measuring the angles, recording the measurements and finding the sums of the angles measured.
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