**Learning objectives**

- Use R to fit nonlinear models to data

**Before class**

- Join a group of three students for the CO2 project. Submit your team roster on Moodle.
- Post solution to the Fermi problem on Moodle

**In class**

- Answer questions about CO2 project
- StartR on fitting nonlinear models to data (pp 40-42, the Income-Housing example)
- Other questions
- QUIZ 4 (dimensional analysis, Fermi problem, fitting linear model to data with R)