The Lattice Method

Tired of very long and tedious long-form multiplication? I thought so. Have a go at this handy trick that lets you multiply enormous numbers with very little difficulty. What is Lattice Multiplication and where does it come from? Good question! Lattice multiplication is a process that was first founded in the 13th century in Morocco. This method seems to be becoming the "go-to" method in teaching elementary students how to multiply two numbers in which at least one of them is a two-digit number or greater. This process uses the exact same algorithm you probably learned in your own elementary classes, but organizes it into a box; thus, this is why many people also refer to this method as the "box-method". Through the use of the distributive property, we can use this same process for any type of multiplication problem. This method not only teaches students on how to multiply two larger numbers, but also allows them to work on their organizational skills and practice identifying the place value of a given number. (https://knilt.arcc.albany.edu/What_is_Lattice_Multiplication)