Grades K–2 · Everyday Life
How does a comb help untangle hair?
A comb has a row of teeth with spaces between them. As the comb moves through hair, small groups of strands pass through those spaces. The teeth help guide strands apart and put them beside one another.
In the diagramTeeth guide strands through gapsHair strands are enlargedSpaces separate small groups; a tight knot may still catch.
A tangle is a place where strands cross and catch. Pulling hard can tighten a knot or break a strand. Gentle movements near the ends can free loose crossings before the comb moves through a larger section.
Hair does not need to become perfectly straight for a comb to help. Curly hair can stay curly while tangles come apart. The useful change is that strands can move past one another more easily.
About this explanation
Starting knowledge: Notice separate strands and follow a tool moving through them.
Sources
- American Academy of Dermatology — Teaching your child healthy hair care habits