What is height? It is a distance between bottom to the top. Last week we learned that to measure things people use a ruler or measuring tape, but in times when measuring tools are not available people use something else- shoes, feet, paper clip or Lego. We call them nonstandard measurements. There are some rules which we follow when we use nonstandard measurements. We use only one kind of items in a time to measure things. Other rule is we can't leave any space between nonstandard units in order to get accurate measurements.
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