online course
Algebra 2
Algebra 2 Grades 9 to 12
Free online high-school algebra course · 12 weeks
- Grade
- Grades 9 to 12
- Ages
- Ages 14 to 18
- Price
- Free
- Format
- Self-paced online course at learn.lanternlearn.com
About this course
Algebra 2 Grades 9 to 12 is a free 12-week online high-school algebra course. Students join Comet and Wren in the Glass House, the old greenhouse behind the community center that the crew restores for a spring Open House: complex numbers and quadratics with no real solution, polynomial functions and their graphs, dividing polynomials and the remainder theorem, rational expressions and equations, radical equations and inverse functions, exponential functions and geometric series, logarithms, building and transforming functions, trigonometry on the unit circle, periodic models, conditional probability and independence, and the normal model with sampling, experiments and simulation.
12-week list
Each week has short lessons Monday to Friday, a Glass House Lab on Wednesday, and a Garden Day with the family on Saturday.
| Week | Topic | Focus | CCSS |
|---|---|---|---|
| 1 | Complex Numbers and the Arc That Never Lands | The sprinkler arc that never reaches the planter | N-CN.A.1, N-CN.A.2, N-CN.C.7, A-REI.B.4 |
| 2 | Polynomial Functions | The planter box whose volume is a cubic | A-APR.B.3, F-IF.B.4, F-IF.C.7 |
| 3 | Dividing Polynomials | Seedling trays shared into rows with a remainder | A-APR.B.2, A-APR.C.4, A-SSE.A.2 |
| 4 | Rational Expressions and Equations | Plant food mixed into the tank | A-APR.D.6, A-REI.A.2, A-CED.A.1 |
| 5 | Radicals and Inverse Functions | The drip hose, drop by drop, and the rule run backwards | A-REI.A.2, N-RN.A.2, F-BF.B.4, F-IF.C.7 |
| 6 | Exponential Functions and Geometric Series | Duckweed doubling across the trough | F-LE.A.2, F-IF.C.8, A-SSE.B.3, A-SSE.B.4, F-BF.A.2 |
| 7 | Logarithms | How many days until the duckweed covers the trough? | F-LE.A.4, F-BF.B.4, F-IF.C.7, F-BF.B.3 |
| 8 | The Function Toolkit | Curves crossing on the chalkboard wall | F-BF.A.1, F-BF.B.3, F-IF.C.9, F-IF.B.6, A-REI.D.11, A-REI.C.7 |
| 9 | Trigonometry on the Unit Circle | The chalk circle around the sprinkler stand | F-TF.A.1, F-TF.A.2, F-TF.C.8 |
| 10 | Periodic Models | The vent timer and the day's temperature wave | F-TF.B.5, F-IF.C.7, F-BF.B.3, F-IF.B.4 |
| 11 | Probability in the Seed Trays | Sprouted or not, watered or not | S-CP.A.1, S-CP.A.2, S-CP.A.3, S-CP.A.4, S-CP.A.5, S-CP.B.6, S-CP.B.7 |
| 12 | Seedling Heights and the Open House | Is the taller tray a surprise? Simulate it | S-ID.A.4, S-IC.A.1, S-IC.A.2, S-IC.B.3, S-IC.B.4, S-IC.B.5, S-IC.B.6 |