Mathematics
- Algebra I →Suggested: Grades 9–10
- Geometry →Suggested: Grades 9–11
- Algebra II →Suggested: Grades 10–12
- Precalculus and Trigonometry →Suggested: Grades 11–12
- Statistics and Probability →Suggested: Grades 10–12
High School Curriculum Explorer · Grades 9–12
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138 original mini-lessons with video choices23 courses9 subject areas
Suggested pathways · Selected standards contributions · No calculus
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Each course has six lessons in three suggested units. Grade ranges guide placement; they are not universal requirements.
English language arts
- English 9 →Suggested: Grade 9
- English 10 →Suggested: Grade 10
- English 11 →Suggested: Grade 11
- English 12 →Suggested: Grade 12
Science
- Biology →Suggested: Grades 9–10
- Chemistry →Suggested: Grades 10–11
- Physics — Algebra and Trigonometry →Suggested: Grades 11–12
- Earth and Environmental Science →Suggested: Grades 9–12
Social studies
- World History →Suggested: Grades 9–10
- United States History →Suggested: Grades 10–11
- Civics and Government →Suggested: Grades 11–12
- Economics and Personal Finance →Suggested: Grades 11–12
Visual arts
- Visual Arts →Suggested: Grades 9–12
Music
- Music →Suggested: Grades 9–12
Health and physical education
- Health and Physical Education →Suggested: Grades 9–12
Computer science and digital literacy
- Computer Science and Digital Literacy →Suggested: Grades 9–12
World languages
- Spanish I →Suggested: Grades 9–12
- Spanish II →Suggested: Grades 10–12
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2 matching lessons
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Algebra I
Suggested grades 9–10 · Unit 3: Quadratics and discrete patterns
Quadratic Roots and a Frame Design
Use factoring and a contextual domain to choose a meaningful quadratic solution.
▷ 2 teacher video choices: Quadratic Roots and a Frame DesignPreview lesson: Quadratic Roots and a Frame Design
Goal: Solve a factorable quadratic and reject a root that violates the stated measurement domain.
Before this: Factoring trinomials Zero-product property
Try together: Solve x²−x−12=0 and check both roots.
Subject-content contributionHSA.REI.B.4.bHigh school · Algebra
35 minutes
Algebra I
Suggested grades 9–10 · Unit 3: Quadratics and discrete patterns
Arithmetic and Geometric Sequences
Translate recursive patterns into explicit formulas with a stated first index.
▷ 2 teacher video choices: Arithmetic and Geometric SequencesPreview lesson: Arithmetic and Geometric Sequences
Goal: Write recursive and explicit rules for two sequences and evaluate a later term.
Before this: Function notation Integer exponents
Try together: Write both rule forms for 10,7,4,1 and 5,15,45,135, with first index 1.
Subject-content contributionHSF.BF.A.2High school · Functions
Earlier high school starter lessons with teacher video choices →