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
See what a course builds on, follow a suggested unit path and practice a useful skill. For students, families, homeschoolers, tutors and teachers.
Suggested pathways · Selected standards contributions · No calculus
A starter map, with no accreditation or graduation credit.
Connect the ideas.
Explain the reasoning.
Subject → Course → Unit → Lesson
Each course has six lessons in three suggested units. Grade ranges guide placement; they are not universal requirements.
Focus on one useful skill
World History
Suggested grades 9–10 · Unit 1: Networks and Historical Inquiry
Analyze an explicitly fictional port dossier to separate temporal order from causal explanation.
▷ 2 teacher video choices: Distinguish Sequence from Historical CauseGoal: Build a timeline and evaluate whether two proposed causes are supported by the supplied sources.
Before this: Order events on a timeline; distinguish a source from an inference.
Try together: Together evaluate “Year 4 must have caused Year 5 because it came first.” Identify the missing reasoning.
World History
Suggested grades 9–10 · Unit 1: Networks and Historical Inquiry
Connect a historical overview with a simplified route model without mistaking the model for a real map.
▷ 2 teacher video choices: Model Exchange across Silk Roads NetworksGoal: Integrate a network diagram and secondary-source summary to explain two kinds of exchange and one model limitation.
Before this: Read a simple network diagram and evaluate the scope of a claim.
Try together: Discuss why “One road carried only silk directly from one endpoint to another” conflicts with the overview.
World History
Suggested grades 9–10 · Unit 2: Industry and Imperial Power
Compare two invented accounts situated in the broader history of mechanized production.
▷ 2 teacher video choices: Compare Industrialization through Different RolesGoal: Explain how role shapes emphasis in two accounts and identify evidence needed to test both.
Before this: Compare source perspective and separate an illustrative model from an authentic quotation.
Try together: Together evaluate whether a production increase disproves the worker’s account.
World History
Suggested grades 9–10 · Unit 2: Industry and Imperial Power
Evaluate a narrow economic explanation without erasing coercion or resistance.
▷ 2 teacher video choices: Evaluate an Imperialism ExplanationGoal: Identify a claim’s useful contribution, two omissions and a more complete research question.
Before this: Distinguish a motive, a means and a consequence in an explanation.
Try together: Discuss the difference between explaining a stated motive and endorsing the action it motivated.
World History
Suggested grades 9–10 · Unit 3: Conflict and International Institutions
Use a short World War I timeline without treating order as a complete explanation.
▷ 2 teacher video choices: Separate a Trigger from Conditions for WarGoal: Distinguish trigger, prior condition and later event, then evaluate an overly simple causal account.
Before this: Read a timeline and evaluate multi-causal explanations.
Try together: Together explain why Germany’s August invasion cannot be the cause of the earlier June assassination in this proposed sequence.
World History
Suggested grades 9–10 · Unit 3: Conflict and International Institutions
Summarize the creation of the United Nations while distinguishing aspiration from historical evaluation.
▷ 2 teacher video choices: Read an Institution’s Founding Purpose CriticallyGoal: Write an accurate summary of two founding dates and explain what the founding account can and cannot demonstrate.
Before this: Distinguish an intended purpose from an observed result; summarize a source accurately.
Try together: Discuss whether knowing an organization’s goal is useful even when it does not establish success.
Earlier high school starter lessons with teacher video choices →