Aligned to Common Core State Standards 6.EE.9
This 13-slide PowerPoint presentation includes animated text (controlled appearance of text) to encourage discussion and think time.
Three real life situations are presented, each involving a constant (an upfront fee for example) and a variable ($30 per month). The presentation walks students through how to create a function table from a word problem, write a function rule to describe the data, and determine the nth term (find the total cost spent over 12 months) by using the function rule.
Thinking questions are asked before answers are given to prompt students to consider what they may encounter when doing similar problems on their own.
This PowerPoint is an excellent way to introduce the concept, allowing for teacher modeling, guided practice, and work with a partner.