How to Teach Multiplication of Whole Numbers

How would you make the multiplication of whole numbers a lesson?

In the answer, use your knowledge of mathematics unit planning and lesson planning. Based on the basic concept of multiplying, the knowledge of number principles, and the understanding of multiplication and adding. Describe Multiplication as repeated addition, multiplication of 1d x 1d without regrouping, multiplication of 1d x 1d with regrouping, etc.