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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Precalculus and Trigonometry
Suggested grades 11–12 · Unit 2: Exponential inverses and the unit circle
Logarithms as Exponential Inverses
Translate exponential and logarithmic statements and solve a model on its real domain.
▷ 3 teacher video choices: Logarithms as Exponential InversesPreview lesson: Logarithms as Exponential Inverses
Goal: Solve exponential equations using the inverse relationship and explain input restrictions.
Before this: Exponent laws Algebra II logarithmic solutions
Try together: Solve log₅(2x+1)=2 and state the real input condition.
Subject-content contributionHSF.BF.B.5High school · Functions(+) Additional preparation
35 minutes
Precalculus and Trigonometry
Suggested grades 11–12 · Unit 2: Exponential inverses and the unit circle
The Unit Circle Beyond One Turn
Interpret sine and cosine as coordinates for positive and negative radian angles.
▷ 3 teacher video choices: The Unit Circle Beyond One TurnPreview lesson: The Unit Circle Beyond One Turn
Goal: Locate coterminal angles and determine coordinate-based sine and cosine values.
Before this: Coordinate plane Radian measure Circle radius
Try together: Find coordinates, sine and cosine for−π,7π/2 and 4π.
Subject-content contributionHSF.TF.A.2High school · Functions
Earlier high school starter lessons with teacher video choices →