Welcome to Linear Functions.
This week is about three ideas that show up everywhere once you notice them: functions, slope, and linear modeling. By Sunday you'll write functions, read slope from a table, and use a linear equation to predict numbers your gut already half-knows.
You'll also start using Excel. The Excel moves are small but they make every other week of this course possible. If Excel feels rusty, lean on the Scribe walkthroughs.
By the end of this week, you'll be able to:
- Explore the basics of functions and their uses.
- Use spreadsheet applications: functions, cell references, and basic graphing.
- Use rounding and estimation to solve application problems.
- Apply deductive and inductive reasoning to solve problems.
- Define the slope as a rate of change.
- Use linear modeling to predict outcomes from data.
Four phases, in order. Don't skip ahead — each one sets up the next.
- L01 · What is a function?
- L02 · Two ways to reason
- L03 · Close enough
- L04 · Slope as a rate of change
- L05 · Linear modeling and prediction
- L06 · Spreadsheets, the finale
- DQ 1 · Basic Excel Formulas, Cell References
- DQ 2 · Slope as Rate of Change, Linear Modeling
- Q1 · Rounding decimals
- Q2 · Writing ratios
- Q3 · Solving proportions
- Q4 · Graphing a line
- Q5 · Slope-intercept equation from m and b
- Q6 · Reading a linear model
Plan for the whole week. These are typical times, not maximums — go faster if it clicks, slower if you're getting stuck.
You won't get through every lesson on the first try. Here's where to look:
Ready to start?
▸ Start Lesson 01