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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Physics — Algebra and Trigonometry
Suggested grades 11–12 · Unit 3: Fields and Collision Design
Predict an Electric-Force Ratio
Use a relative inverse-square model without building or handling electrical devices.
▷ 2 teacher video choices: Predict an Electric-Force RatioPreview lesson: Predict an Electric-Force Ratio
Goal: Calculate three force ratios and explain both magnitude and direction under a point-charge model.
Before this: Use squares, ratios and signs.
Try together: Together find the ratio when both charge magnitudes double at the original distance.
Subject-content contributionHS-PS2-4High school band
Supporting literacy connectionRST.11-12.1Grades 11–12
Selected NGSS high school-band contribution; full performance requires additional evidence and instruction.40 minutes
Physics — Algebra and Trigonometry
Suggested grades 11–12 · Unit 3: Fields and Collision Design
Reduce Force by Changing Stopping Time
Evaluate fictional cargo-protection data with impulse reasoning and design constraints.
▷ 2 teacher video choices: Reduce Force by Changing Stopping TimePreview lesson: Reduce Force by Changing Stopping Time
Goal: Recommend and refine a model packaging design using stopping time, average force and space constraints.
Before this: Understand momentum and divide by a time interval.
Try together: Together explain why a design that rebounds could have a different momentum change even with the same incoming speed.
Subject-content contributionHS-PS2-3High school band
Supporting literacy connectionRST.11-12.1Grades 11–12
Selected NGSS high school-band contribution; full performance requires additional evidence and instruction.Earlier high school starter lessons with teacher video choices →