Unit 9 · Culminating Projects
Two-Variable Relationships in Action
Two project versions that pull together everything from Unit 9 — identifying independent and dependent variables, writing equations in the form y = kx, building tables of values, and reading graphs. Pick one, or run them as differentiated options. Each is self-guided, interactive, and printable.
Choose Your Version
Two Ways to Show Mastery
📈 Streaming Channel Growth Lab
Launch a streaming channel: identify independent and dependent variables, set a weekly subscriber growth rate k, write the equation y = kx, generate a data table for weeks 0–5, read the graph for specific values, and compare two channels to decide which grows faster.
Version B · Real-World Investigation📱 Phone Plan Showdown
Investigate two phone plans for your family: identify months as the independent variable and total cost as the dependent variable, write equations y = kx for each plan, build a 6-month cost table, and compare both plans to recommend the better deal.
For the Teacher
How to Use These Projects
Standards: 6.EE.9 — use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity (dependent variable) in terms of the other quantity (independent variable). Analyze the relationship using graphs and tables.
Both versions are parallel. They assess the same skills through different contexts, so you can assign Version A and Version B to different students and grade on the same rubric (built into each project). Great for choice boards, make-up work, or A/B class sections.
Built in: live calculators with instant feedback, a progress bar, hints for scaffolding, a written deliverable, a student checklist, a 3-point rubric, and a print button so students can turn in a finished plan. Version A also includes a dynamically generated SVG line graph.
Answer key: Open the teacher answer key for both versions.