This is important when buying and selling marbles as collectors base price on the size.
Average radius of a marble.
Give the students the opportunity to devise an improvement before suggesting the method illustrated above.
Discuss with the class the difficulties with this method in particular the shape of the marble.
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Give students a single marble and ask them to measure the radius using a ruler.
Marbles can be used for a variety of games called marbles.
Write down the measurement.
In marble sets and marble runs the 1 3 8 of an inch and the 1 5 8 of an inch marbles are the more common choices.
Most templates measure to 16ths of an inch.
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