PreCalculus Domain and Range

We start right in on the first day of school with reviewing Interval Notation, Domain & Range. We start with interval notation and I use a worksheet of examples for discussion. Students go up to the whiteboard and write out the interval notation. We also talk about what domain & range are. They have spent a lot of time in Algebra 2 on this topic so should be very good with it. So this should just be a review. I like coolmath.com's style and find this a good resource in understanding the finding of domain without a graph.  Range at this point we find graphically, using the domain to guide us in our investigation of range.

We summarize these three topics with a foldable.

And the next class block they have a warm up where they find both the domain & range of two examples.

Here are the documents I used (foldables, worksheets, etc)