When my students grow too dependent on their calculators, I ask them to find a number that, when multiplied by itself, gives them 2. Students quickly see that since 1² = 1 and 2² = 4, the answer has ...

The material contains a total of 26 columns (A-Z) with 10 exercises for Arithmetic of rational numbers, including the solutions to these columns. It also includes all 26 columns (A-Z) with an enlarged ...

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 ...

What if the world of numbers you have known until now was actually only half of the story? This question is the gateway to ...