Why Handles Fit Your Hand: Shapes Made for People

Pick up your toothbrush. Feel how the handle is a little bumpy or curved where your fingers go. Someone planned that on purpose so it would not slip! Now think about a crayon. It is round and small so your little hand can hold it just right. People whose job is designing things are called industrial designers. They think very hard about the SHAPE of everyday stuff, so it fits YOUR body and feels good to use.

After this lesson you will be able to: - Say what a designer does - Know the special word for "made to fit your body": ergonomic - Spot round, flat, and bumpy shapes that help your hands - Design a handle that fits YOUR own hand

Ergonomic is a big word that means "made to fit your body so it feels comfy." Say it slowly: er-go-NOM-ic. A chair that fits your back is ergonomic. A cup with a handle your fingers curl around is ergonomic. When something is ergonomic, it does not hurt your hand, it does not slip, and you can use it for a long time without getting tired.

Designers pick shapes for a reason. A ROUND shape, like a ball or a doorknob, is easy to grab from any side. A FLAT shape, like a phone or a book, is easy to hold against your body. A BUMPY shape, with little ridges, helps your fingers grip so nothing slips. Look at a bike handle. It is round so your hand wraps around it, and it is often bumpy so wet hands do not slide off. Every part was chosen to help YOU.

Kids and grown-ups are different sizes, so things are made in different sizes too. Your fork at home is smaller than a grown-up fork. Kid scissors have small round holes for small fingers. A baby spoon is tiny and soft. A good designer asks: WHO will use this? A tool for tiny hands should be small and light. A tool for big hands can be bigger. Matching the size to the person is part of good design.