In this chapter, we look beyond the whole numbers at other numbers that are included in school mathematics in grades pre-K to 8, particularly in the upper grades. We first look at the rational numbers ...
A forgotten number system invented in the 19th century may provide the simplest explanation for why our universe could have 10 dimensions As children, we all learn about numbers. We start with ...
What processes underlie children’s symbolic approximate arithmetic? We first considered whether children might have learned some symbolic addition facts and used their fact knowledge to solve the ...
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