In activities that imply the knowledge of the concept 'Mole', students have abstraction difficulties when numbers are gigantic. Scientific notation is a prerequisite here, and students have difficulty in understanding numbers represented in scientific notation such as the number . The representation of numbers in scientific notation is an obstacle when student needs to resolve exercises or solve problems involving the concept of 'Mole'. Students have difficulties at a mathematical level when, for example, needs to write the number 56000000000000 in scientific notation .

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# Mole

Children have problems understanding very large number, to deal with very large numbers and to use numbers written in scientifical notation.

### Summary

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## Student Problem (1)- School 11-15
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