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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See what a course builds on, follow a suggested unit path and practice a useful skill. For students, families, homeschoolers, tutors and teachers.
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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Earth and Environmental Science
Suggested grades 9–12 · Unit 2: Carbon and Resource Decisions
Keep Stocks Separate From Carbon Flows
Account for annual carbon transfers across interacting reservoirs.
▷ 2 teacher video choices: Keep Stocks Separate From Carbon FlowsPreview lesson: Keep Stocks Separate From Carbon Flows
Goal: Calculate net reservoir changes and explain how a transfer can conserve carbon while increasing atmospheric stock.
Before this: Distinguish a total amount from an amount per year.
Try together: Together calculate the atmospheric change if the fossil transfer were 3 instead of 8, with all other modeled flows unchanged.
Subject-content contributionHS-ESS2-6High school band
Supporting literacy connectionRST.9-10.7Grades 9–10
Selected NGSS high school-band contribution; full performance requires additional evidence and instruction.40 minutes
Earth and Environmental Science
Suggested grades 9–12 · Unit 2: Carbon and Resource Decisions
Compare Resource Strategies Transparently
Evaluate competing metal-use options using economic, environmental and social criteria.
▷ 2 teacher video choices: Compare Resource Strategies TransparentlyPreview lesson: Compare Resource Strategies Transparently
Goal: Recommend a feasible strategy with two numerical comparisons and an explicit tradeoff.
Before this: Compare costs, percentages and constraints.
Try together: Together explain why 100 refurbished frames would exceed the supplied inspection capacity even though the purchase price is lower.
Subject-content contributionHS-ESS3-2High school band
Supporting literacy connectionRST.9-10.1Grades 9–10
Selected NGSS high school-band contribution; full performance requires additional evidence and instruction.Earlier high school starter lessons with teacher video choices →