İn the first lesson of Computational and Mathematical Numeracy, we discussed the importance of the numbers. We dont realize much but we see the numbers everywhere in our daily lives. Our lives are full of numbers. Sometimes we hear in songs. Sometimes we see on the billboards. We discussed the meanings of the numbers while we are listening the songs. We discovered that odd numbers are unhappiness and even ones are used for happiness. We thought that the odd ones are unhappiness because they dont have the pairs. For counting the things and to count the time again the numbers are needed. We learned that in the past ıshando bones were used for practice of arithmetics.The bones were belonged to animals. ı am intrested in this, ı have learned that lebombo bones are known as the oldest mathematical object. In math it doesnt mather which subject there is always numbers. Computers look like it has only relation with the technology but again there is numbers inside. It is about logic and arithmatic. Now I am more aware of, the importance of the numbers.