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 3: Environmental Solutions and Projections
Refine an Impact-Reduction Proposal
Compare mitigation data and improve a design while guarding against single-measure claims.
▷ 2 teacher video choices: Refine an Impact-Reduction ProposalPreview lesson: Refine an Impact-Reduction Proposal
Goal: Evaluate a habitat proposal against three criteria and propose a testable refinement.
Before this: Interpret averages and distinguish before/after evidence from a causal conclusion.
Try together: Together label every predicted quantity in a comparison table and explain why it should not be presented as a measured success.
Subject-content contributionHS-ESS3-4High school band
Supporting literacy connectionRST.9-10.1Grades 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 3: Environmental Solutions and Projections
Read a Projection as a Conditional Model
Interpret model outputs and associated impacts without turning a scenario into an exact prediction.
▷ 2 teacher video choices: Read a Projection as a Conditional ModelPreview lesson: Read a Projection as a Conditional Model
Goal: Compare two scenario rates and write a qualified explanation with one associated impact and two uncertainties.
Before this: Calculate a finite change per decade and read a graph.
Try together: Together explain why the shared 0.5°C starting anomaly is not a statement that either place’s absolute temperature is 0.5°C.
Subject-content contributionHS-ESS3-5High school band
Supporting literacy connectionRST.9-10.7Grades 9–10
Selected NGSS high school-band contribution; full performance requires additional evidence and instruction.Earlier high school starter lessons with teacher video choices →