In Week 24, we listed the Common Core Standards for Mathematical Practices. Model with mathematics is the fourth standard.
Mathematically proficient students can apply mathematics to solve problems in everyday life. They can make assumptions and approximations to simplify a complicated situation, realizing that these may need revision later. They are able to identify important quantities in a practical situation. They routinely interpret their results in the context of the situation and reflect on whether the results make sense. Where have you seen evidence that your student has used mathematics in everyday life?