An example of a good simile for a child is “As cold as a dog’s nose,” and an example of a metaphor is “He was a lion in battle.” A simile is a comparison using “like” or “as,” while a metaphor compares two things without the use of “like” or “as.” Most children understand similes and metaphors about animals and other simple concepts that they have been exposed to through experience or early life education.
Similes and metaphors that are effective for instructing children are ones that make comparisons that rely on symbols or concepts that children are familiar with. Some additional examples of similes that kids can understand are “As big as an elephant” and “As brave as a lion.” Some easy to understand metaphors are “The classroom was a zoo” and “Life is a roller coaster.”
Another excellent way to come up with similes and metaphors for kids is to encourage them to create their own that relate to their experiences or to help them identify similes and metaphors in popular children's rhymes and songs. There are also many colloquially used metaphors that children may already be familiar with, such as "Dead tired," "Rise and shine" and "Chill out."