Bozeman Science AP science library
Use for AP-aligned science essentials across biology, chemistry, environmental science, and physics.
An AP Environmental Science path covering ecosystems, biodiversity, populations, Earth systems, land and water use, energy, pollution, global change, quantitative methods, and solution design.
An AP Environmental Science path covering ecosystems, biodiversity, populations, Earth systems, land and water use, energy, pollution, global change, quantitative methods, and solution design.
This track is organized as a mastery loop: source study, sequenced checks, Khan report evidence, then tutor handoff only when the data shows a real stuck point.
Use linked OER and companion sources before attempting checks.
Move through numbered PeerTutor problems without skipping failed gates.
Enter Khan report evidence and let the adaptive plan rank repair units.
Bring exact misses, notes, and one sharp question to a tutor.
The bank is intentionally mixed across facets and difficulty so high scores cannot come from one narrow question style.
Use these linked courses for video instruction and mastery practice, then return here for PeerTutor original checks and tutor help on the exact unit that got stuck.
External video content is linked or embedded through provider-hosted players, not copied. PeerTutor practice is original and cites each source path separately.
Watch the strongest public video path inside PeerTutor, then use the unit checks below to prove the student can actually do the work.
Use for AP-aligned science essentials across biology, chemistry, environmental science, and physics.
Concise science explainers for physics, chemistry, biology, astronomy, and earth science.
Khan Academy progress has to be entered from the student or tutor report. Khan does not provide a supported public progress API, so this mirror stores unit status locally and uses it to target PeerTutor checks.
Khan Academy does not provide a supported public progress API or external API keys. PeerTutor stores student-provided report evidence and maps it to original practice instead.
0 repair units and 5 practice units need attention before extension.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "The Living World: Ecosystems", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "The Living World: Biodiversity", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Populations", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Earth Systems and Resources", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Land and Water Use", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Energy Resources and Consumption", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Atmospheric Pollution", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Aquatic and Terrestrial Pollution", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Global Change", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Built for independent progress first, then tutor support where the student gets stuck.
Practice: Analyze an energy pyramid and nutrient-cycle model with one quantitative calculation and one limitation.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Use ecosystem structure, biomes, productivity, food webs, trophic levels, and biogeochemical cycles.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Analyze an energy pyramid and nutrient-cycle model with one quantitative calculation and one limitation.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Explain energy flow and matter cycling.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a The Living World: Ecosystems investigation, a measurement changes from 12 to 21. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "The Living World: Ecosystems"?
Which practice artifact should you produce for "The Living World: Ecosystems" before asking a tutor for help?
Which target best proves readiness for "The Living World: Ecosystems"?
Which second target belongs to "The Living World: Ecosystems"?
Practice: Evaluate how a biodiversity change affects ecosystem services and long-term resilience.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Explain biodiversity, ecosystem services, island biogeography, tolerance, disturbance, and succession.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Evaluate how a biodiversity change affects ecosystem services and long-term resilience.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect biodiversity to ecosystem resilience.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a The Living World: Biodiversity investigation, a measurement changes from 13 to 22. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "The Living World: Biodiversity"?
Which practice artifact should you produce for "The Living World: Biodiversity" before asking a tutor for help?
Which target best proves readiness for "The Living World: Biodiversity"?
Which second target belongs to "The Living World: Biodiversity"?
Practice: Read an age-structure diagram and forecast one likely environmental pressure with evidence.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Use population growth, carrying capacity, survivorship curves, age structures, and human population dynamics.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Read an age-structure diagram and forecast one likely environmental pressure with evidence.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Interpret demographic and growth data.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Populations investigation, a measurement changes from 14 to 23. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Populations"?
Which practice artifact should you produce for "Populations" before asking a tutor for help?
Which target best proves readiness for "Populations"?
Which second target belongs to "Populations"?
Practice: Explain a resource or hazard scenario using Earth-system evidence and uncertainty.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Use plate tectonics, soil, atmosphere, climate, global winds, and ocean-atmosphere patterns.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Explain a resource or hazard scenario using Earth-system evidence and uncertainty.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect geologic and atmospheric systems to resources and hazards.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Earth Systems and Resources investigation, a measurement changes from 15 to 24. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Earth Systems and Resources"?
Which practice artifact should you produce for "Earth Systems and Resources" before asking a tutor for help?
Which target best proves readiness for "Earth Systems and Resources"?
Which second target belongs to "Earth Systems and Resources"?
Practice: Write a land-use decision memo comparing benefits, costs, stakeholders, and unintended effects.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Analyze agriculture, irrigation, pest control, forestry, mining, urbanization, overfishing, and sustainable practices.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Write a land-use decision memo comparing benefits, costs, stakeholders, and unintended effects.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Evaluate land-use tradeoffs.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Land and Water Use investigation, a measurement changes from 16 to 25. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Land and Water Use"?
Which practice artifact should you produce for "Land and Water Use" before asking a tutor for help?
Which target best proves readiness for "Land and Water Use"?
Which second target belongs to "Land and Water Use"?
Practice: Rank two energy choices for a region using quantitative and environmental evidence.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Compare fossil fuels, nuclear, solar, wind, hydro, geothermal, biomass, and conservation.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Rank two energy choices for a region using quantitative and environmental evidence.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Use efficiency, availability, and environmental-impact evidence.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Energy Resources and Consumption investigation, a measurement changes from 17 to 26. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Energy Resources and Consumption"?
Which practice artifact should you produce for "Energy Resources and Consumption" before asking a tutor for help?
Which target best proves readiness for "Energy Resources and Consumption"?
Which second target belongs to "Energy Resources and Consumption"?
Practice: Trace an atmospheric pollutant from source to health/ecosystem effect and propose a mitigation.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Use air pollutants, smog, indoor pollution, acid rain, legislation, and mitigation methods.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Trace an atmospheric pollutant from source to health/ecosystem effect and propose a mitigation.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect pollutant sources to effects and controls.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Atmospheric Pollution investigation, a measurement changes from 18 to 27. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Atmospheric Pollution"?
Which practice artifact should you produce for "Atmospheric Pollution" before asking a tutor for help?
Which target best proves readiness for "Atmospheric Pollution"?
Which second target belongs to "Atmospheric Pollution"?
Practice: Diagnose a pollution scenario and choose a monitoring or remediation strategy with evidence.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Analyze pollution sources, solid waste, wastewater, thermal pollution, pathogens, and human health.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Diagnose a pollution scenario and choose a monitoring or remediation strategy with evidence.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Distinguish point-source and nonpoint-source problems.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Aquatic and Terrestrial Pollution investigation, a measurement changes from 19 to 28. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Aquatic and Terrestrial Pollution"?
Which practice artifact should you produce for "Aquatic and Terrestrial Pollution" before asking a tutor for help?
Which target best proves readiness for "Aquatic and Terrestrial Pollution"?
Which second target belongs to "Aquatic and Terrestrial Pollution"?
Practice: Write a global-change argument with mechanism, evidence, proposed solution, and tradeoff.
Start with AP Environmental Science and AP/College Environmental Science. Take notes until you can explain: Use ozone depletion, climate change, ocean warming, acidification, invasive species, and biodiversity loss.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Write a global-change argument with mechanism, evidence, proposed solution, and tradeoff.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Evaluate global-scale solutions and limits.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Global Change investigation, a measurement changes from 20 to 29. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Environmental Science unit "Global Change"?
Which practice artifact should you produce for "Global Change" before asking a tutor for help?
Which target best proves readiness for "Global Change"?
Which second target belongs to "Global Change"?
These are source links, not scraped course copies. Licenses differ, so the label tells students how each source is used.
View the full citation indexOfficial AP Environmental Science course overview with environmental concepts, data analysis, and solution-proposal skills.
Free AP Environmental Science video and mastery path; linked as a companion course.
Free science textbooks for biology, chemistry, physics, anatomy, astronomy, and more.
AP-aligned science video essentials for biology, chemistry, environmental science, and physics.
Science explainers across chemistry, physics, biology, astronomy, and related college-bridge topics.
STEM FlexBooks, bite-size concepts, practice, and standards-aligned textbook paths; linked rather than republished.