# Mathematics in Demand Planning – Show me the Money!!!!

As mentioned in my previous blog posts, mathematics is incorporated in to absolutely everything in life. This idea was further embedded during a lecture on supply chain and logistics in maths. It was a three hour input, but It was honestly the best maths class to date. It was completely relevant, interactive and so much fun. This blog post aims to draw on points about fundamental mathematics on previous blog posts and how it is incorporated into demand planning.

Firstly, when we talk about supply chain and logistic planning, what springs to mind is food. Apart from the odd rumble of my stomach, there is actually some mathematical concept behind this all. lets take crisps for example. If we think about the bar code, it has a significant amount of numbers around it (see image below).

Within the red circle, is a best before date 06/11/10. The number to the side says 06:51 which would highlight the time where the big packet (if it is a multipack) was closed. The number code under 06:51 is 275 which means which day within the year it has been produced. These timings are absolutely crucial for the company to give an accurate sell by date which will prevent their customers from getting food poisoning. The fundamental mathematics behind this is predicting by using the numbers to provide an accurate time scale for consumption. To an extent, the fundamental mathematics behind it could be knowing the date and the days of the year. Furthermore, each packet of crisp has a certain weight which could identify that another aspect of fundamental mathematics is weight. Even when the small packets are being placed into the big multi-pack bag, there are still a specific number which is out in each bag. This takes the art of crisp making and manufacturing down to being able to count. Fundamentally, that is astounding. Come to think about it, think of all the activities that you could bring in to the classroom around crisps. Potentially you could go down the rout of how the crisps are made, what machinery is used to manufacture crisps and how they are programmed.. you could even take a stab at making your own crisps!! Of course, maths comes into every single one of those activities.