**1**To identify the logarithmic functions based on models used in contexts of science.**2**To interpret algebraic expressions that contain logarithms and represent situations of change.**2.1**Identify situations where a model is represented with logarithms.**2.2**Identify the magnitudes that have a dependency relation in a situation that involves logarithms.**2.3**Identify a pattern in situations where a model can be determined using logarithms.**2.4**Identify what a logarithm present in a model of a situation in context represents.**2.5**Identify the logarithm of a number.**2.6**Generalize and explain the behavior of the quantities in a situation, based on an equation that involves logarithms.**2.7**Create situations that represent a model with logarithms.

**3**To interpret situations of variation, identifying relations of logarithmic functions.**3.1**Characterize the magnitudes that have a dependency relation in situations with models of a logarithmic type.**3.2**Identify how a magnitude varies in relation to another, in situations with models of a logarithmic type.**3.3**Identify the relationship between the magnitudes involved in a situation with models of a logarithmic type as a function.

**4**To establish strategies to represent logarithmic functions that characterize situations of variation.**4.1**Construct graphs that represent the behavior of a logarithmic function.**4.2**Identify the table as a resource to identify the relation between the magnitudes in logarithmic functions.**4.3**Name the magnitudes that are related in a logarithmic function, through variables.**4.4**Construct algebraic expressions that represent logarithmic functions.**4.5**Represent logarithmic functions in the Cartesian plane.**4.6**Interpret and explain information present in a graph of a logarithmic function.**4.7**Construct a situation based on the graph of a logarithmic function.

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