1.2 Arithmetic Sequences and Series

Key Ideas

• Modelling real-life situations with the structure of arithmetic and geometric sequences and series allows for prediction, analysis and interpretation.

• Patterns in numbers inform the development of algebraic tools that can be applied to find unknowns.

• Numbers and formulae can appear in different, but equivalent, forms, or representations, which can help us to establish identities.

• Formulae are a generalization made on the basis of specific examples, which can then be extended to new examples.

• I am able to expand expressions written in sigma notation

• I can use Sigma notation to sum (add) terms

• I can analyse, interpret and predict where a model is not perfectly arithmetic in real life.