In this lesson, students will learn to multiply numbers using an array. Students will multiply one-digit by up to four digits, and two digit by two digit numbers.
Multiplying with arrays gives students a better understanding of the concept of multiplication, and of place values.
Models and manipulative materials can help make multiplication with integers more tangible. They provide a visual representation of the algorithms we use to perform these operations and help us see how the algorithms relate to what is actually happening with the numbers.