Number Theory: Square Numbers
Making rectangular arrays with tiles is a great visual way to have students understand multiplication as repeated addition. And since we’re making arrays anyway, why not tie in square numbers. A square number is: 1) A number that can be expressed as the product of the same two numbers. 2) The product of a number multiplied by itself. When making rectangluar arrays, square nuumbers (1, 4, 9, 16…) always make a square. Besides, there are some very neat patterns that…