# Construct functions to model linear relationships II

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## Objective

SWBAT construct functions that model linear relationships, day 2.

#### Big Idea

What if the problem doesn't tell you the initial value? Can you still construct a function that models a linear relationship?

## Warm-up

10 minutes

Each day, students complete a warm-up that usually consists of spiraling the previous day's material, in addition to older material.  Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

For a video narrative about how I structure each lesson, and how the warm-up fits in, click Warm UP.

Today's warm-up is a quick review.

Many kids will substitute points in, which is a totally fine way to solve. But some kids will use their more enhanced logic about slope and reason that each of the other answer choices are wrong without needing to calculate - they have a negative slope!  This reinforces their understanding and use of structure to solve problems.

40 minutes

10 minutes

## Homework

15 minutes

The homework file is a resource that generally includes 5-7 problems, some of which are related to the day's lesson, as well as spiraled review of previous lessons.  I also give the kids the answers to all the problems.

For a video narrative on my HW philosophy, watch this video.

Sometimes, the HW file is a take-home assessment.