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Mountain of the Knowledge Master
Question Mark Tower
Dr. Inventor's House
Fun Park
For Teachers and Parents
Learn all about the wonder of calculators!  Question Mark Tower  Calculators are full of mysteries. Come explore their amazing world!
Mystery 1  What’s inside a calculator?
Mystery 2  How do calculators solve problems?
Mystery 3  Why are the buttons on calculators and telephones lined up in a different order?
Mystery 4  Why do calculators display numbers using short lines?
Mystery 5  What kinds of people use calculators a lot?
Mystery 6  What are the “AC” and “M+” buttons for? Copyright / Link Privacy Policy
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