[[Block 1 introduction]] / [[Sequences overview]] / 1.1.4 Describe simple patterns
# Describe simple patterns with a term-to-term rule
#### Need to be able to:
- Describe arithmetic sequences with a starting point (first term) and the term-to-term rule
- Understand that some rules are abstract and others are connected to specific situations. For example, the number of people who can sit around tables of different sizes.
- Be able to extend sequences using the term-to-term rule and find missing terms.
> [!success]- Demonstrate understanding
> *Being able to answer questions like all of these is needed to show understanding:*
> 1. Draw a pattern with a term-to-term rule of +4.
> 2. What rule is represented by the sequence: **100, 89, 78, 67…**
> 3. What rule is shown in this representation:
> ![[Pasted image 20250528181234.png]]
>[!Example]- Vocabulary
>*This vocabulary needs to be properly understood as part of this small step:*
>- [[Arithmetic sequence]]
>- [[Term to term rule]]
> [!warning]- Misconceptions
> *These are things that people commonly misunderstand about this small step.*
> [!Extension]-
> *Extension is about digging deeper into the concept(s) in the small step, not introducing new or 'harder' content. Learning later content is easier if understanding is deeper.*
>
> - **Explore term-to-term rules for other types of sequences**