Children’s Day pre schoolers are measuring maniacs these days. I had my wingspan measured. It is 101 unifix cubes long. It is also 73 inches, 18 crayons and 13.5 hummingbird wingspans long—same as Malcolm, Annabel’s Dad. Anna Priya’s wingspan is half of Mr. Rick’s.
Experiencing that 101 unifix cubes, 18 crayons, 13.5 hummingbird wingspans and 73 inches are different ways of expressing the same thing is important even if it happens years before they can manipulate the numbers…even before they can associate symbols with quantities. Understanding that there are many ways to see the same thing is a critical educational objective.
Convert the fraction 3/8 to a percent. Turn 37.5% into a decimal. What is the fraction for .375? Students learn how to perform these calisthenics in 5th and 6th grade. However, this business must rest on a complex mental framework in order to be very valuable. Education is building that framework. Learning how to convert fractions to decimals and back again builds only a few tiny links in the fully developed, complex brain.