An ordinary differential equations path covering modeling, first-order methods, qualitative analysis, second-order systems, Laplace transforms, numerical methods, and applications.
Pacing
8 units, 20-30 weeks self-paced
Units
8 unit sequence
Practice
512 checked answers
Support
Self-paced or tutor-guided
Outcomes
Model changing systems with differential equations and stated assumptions.
Solve first-order, second-order, and systems problems using appropriate methods.
Use qualitative and numerical tools when closed forms are unavailable or misleading.
Course command center
Know what to study, what to repair, and where to jump next
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.
8
Units
512
Checks
64-64/unit
Range
Mastery loop
01Study
Use linked OER and companion sources before attempting checks.
02Practice
Move through numbered PeerTutor problems without skipping failed gates.
03Mirror
Enter Khan report evidence and let the adaptive plan rank repair units.
04Handoff
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.
Facets
Concept104
Fluency38
Application96
Analysis72
Exam Readiness74
Metacognition128
Difficulty
Foundation208
Developing104
Proficient112
Advanced88
Khan progress mirror
Mirror outside mastery into PeerTutor practice
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.
0%
Avg
0
Mastered
8
Review
Khan report mirror
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.
Practice Modeling with differential equations next
0 repair units and 5 practice units need attention before extension.
Unit 1practiceModeling with differential equations
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.
Khan 0%64 PeerTutor checks
Unit 2practiceFirst-order equations
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.
Khan 0%64 PeerTutor checks
Unit 3practiceAutonomous equations and qualitative analysis
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.
Khan 0%64 PeerTutor checks
Unit 4practiceLinear second-order equations
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.
Khan 0%64 PeerTutor checks
Unit 5practiceSystems and phase planes
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.
Khan 0%64 PeerTutor checks
Unit 1Modeling with differential equationsRepair before advancing
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 "Modeling with differential equations", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Translate rates, stocks, forces, and constraints into equations. · Check units, variables, parameters, and initial conditions.
Unit 2First-order equationsRepair before advancing
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 "First-order equations", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Solve separable, linear, exact, and substitution-based first-order ODEs. · Use initial conditions and domains carefully.
Unit 3Autonomous equations and qualitative analysisRepair before advancing
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 "Autonomous equations and qualitative analysis", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Use equilibria, phase lines, stability, and slope fields. · Predict long-run behavior without solving explicitly.
Unit 4Linear second-order equationsRepair before advancing
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 "Linear second-order equations", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Solve homogeneous and forced equations with constant coefficients. · Interpret natural frequency, damping, resonance, and transients.
Unit 5Systems and phase planesRepair before advancing
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 "Systems and phase planes", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Convert higher-order equations into systems. · Use eigenvalues and eigenvectors to analyze linear systems.
Unit 6Laplace transformsRepair before advancing
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 "Laplace transforms", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Use transforms for initial-value problems. · Handle step functions, impulses, and discontinuous forcing.
Unit 7Series and numerical methodsRepair before advancing
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 "Series and numerical methods", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Approximate solutions using Euler, improved Euler, Runge-Kutta, and series ideas. · Estimate numerical error and stability limits.
Unit 8Applications capstoneRepair before advancing
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 "Applications capstone", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Mapped skills: Model circuits, mixing, epidemics, mechanics, and coupled systems. · Communicate model limits honestly.
Loading saved mirror.
Unit sequence
Built for independent progress first, then tutor support where the student gets stuck.
01
Modeling with differential equations
Translate rates, stocks, forces, and constraints into equations.
Check units, variables, parameters, and initial conditions.
Practice: Turn a physical or population scenario into an ODE model and name every assumption.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Translate rates, stocks, forces, and constraints into equations.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Turn a physical or population scenario into an ODE model and name every assumption.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Check units, variables, parameters, and initial conditions.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/11
Fluency0/5
Application0/17
Analysis0/8
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupApplicationfoundationNext
A Modeling with differential equations practice set has 12 questions. If 5 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessApplicationfoundation
Which target best matches the Differential Equations unit "Modeling with differential equations"?
#4Practice artifactApplicationfoundation
Which practice artifact should you produce for "Modeling with differential equations" before asking a tutor for help?
#5Unit targetApplicationfoundation
Which target best proves readiness for "Modeling with differential equations"?
#6Second targetApplicationfoundation
Which second target belongs to "Modeling with differential equations"?
02
First-order equations
Solve separable, linear, exact, and substitution-based first-order ODEs.
Use initial conditions and domains carefully.
Practice: Solve three first-order equations and classify the method used for each.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Solve separable, linear, exact, and substitution-based first-order ODEs.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Solve three first-order equations and classify the method used for each.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Use initial conditions and domains carefully.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/15
Fluency0/5
Application0/13
Analysis0/8
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupApplicationfoundationNext
A First-order equations practice set has 13 questions. If 6 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessConceptfoundation
Which target best matches the Differential Equations unit "First-order equations"?
#4Practice artifactApplicationfoundation
Which practice artifact should you produce for "First-order equations" before asking a tutor for help?
#5Unit targetConceptfoundation
Which target best proves readiness for "First-order equations"?
#6Second targetConceptfoundation
Which second target belongs to "First-order equations"?
03
Autonomous equations and qualitative analysis
Use equilibria, phase lines, stability, and slope fields.
Predict long-run behavior without solving explicitly.
Practice: Create a phase-line analysis for a logistic-style model and explain stability.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Use equilibria, phase lines, stability, and slope fields.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Create a phase-line analysis for a logistic-style model and explain stability.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Predict long-run behavior without solving explicitly.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/11
Fluency0/5
Application0/9
Analysis0/16
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupAnalysisfoundationNext
A Autonomous equations and qualitative analysis practice set has 14 questions. If 7 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessAnalysisfoundation
Which target best matches the Differential Equations unit "Autonomous equations and qualitative analysis"?
#4Practice artifactAnalysisfoundation
Which practice artifact should you produce for "Autonomous equations and qualitative analysis" before asking a tutor for help?
#5Unit targetAnalysisfoundation
Which target best proves readiness for "Autonomous equations and qualitative analysis"?
#6Second targetAnalysisfoundation
Which second target belongs to "Autonomous equations and qualitative analysis"?
04
Linear second-order equations
Solve homogeneous and forced equations with constant coefficients.
Interpret natural frequency, damping, resonance, and transients.
Practice: Model a spring-mass system and classify underdamped, critically damped, or overdamped behavior.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Solve homogeneous and forced equations with constant coefficients.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Model a spring-mass system and classify underdamped, critically damped, or overdamped behavior.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Interpret natural frequency, damping, resonance, and transients.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/15
Fluency0/5
Application0/13
Analysis0/8
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupApplicationfoundationNext
A Linear second-order equations practice set has 15 questions. If 8 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessConceptfoundation
Which target best matches the Differential Equations unit "Linear second-order equations"?
#4Practice artifactApplicationfoundation
Which practice artifact should you produce for "Linear second-order equations" before asking a tutor for help?
#5Unit targetConceptfoundation
Which target best proves readiness for "Linear second-order equations"?
#6Second targetConceptfoundation
Which second target belongs to "Linear second-order equations"?
05
Systems and phase planes
Convert higher-order equations into systems.
Use eigenvalues and eigenvectors to analyze linear systems.
Practice: Sketch a phase portrait from trace, determinant, and eigenvalue information.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Convert higher-order equations into systems.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Sketch a phase portrait from trace, determinant, and eigenvalue information.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Use eigenvalues and eigenvectors to analyze linear systems.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/15
Fluency0/5
Application0/13
Analysis0/8
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupApplicationfoundationNext
A Systems and phase planes practice set has 16 questions. If 9 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessConceptfoundation
Which target best matches the Differential Equations unit "Systems and phase planes"?
#4Practice artifactApplicationfoundation
Which practice artifact should you produce for "Systems and phase planes" before asking a tutor for help?
#5Unit targetConceptfoundation
Which target best proves readiness for "Systems and phase planes"?
#6Second targetConceptfoundation
Which second target belongs to "Systems and phase planes"?
06
Laplace transforms
Use transforms for initial-value problems.
Handle step functions, impulses, and discontinuous forcing.
Practice: Solve an IVP with a step input and interpret the result in time.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Use transforms for initial-value problems.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Solve an IVP with a step input and interpret the result in time.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Handle step functions, impulses, and discontinuous forcing.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/11
Fluency0/4
Application0/9
Analysis0/8
Exam Readiness0/16
Metacognition0/16
#1Quantitative warmupExam ReadinessfoundationNext
A Laplace transforms practice set has 17 questions. If 10 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessExam Readinessfoundation
Which target best matches the Differential Equations unit "Laplace transforms"?
#4Practice artifactExam Readinessfoundation
Which practice artifact should you produce for "Laplace transforms" before asking a tutor for help?
#5Unit targetExam Readinessfoundation
Which target best proves readiness for "Laplace transforms"?
#6Second targetExam Readinessfoundation
Which second target belongs to "Laplace transforms"?
07
Series and numerical methods
Approximate solutions using Euler, improved Euler, Runge-Kutta, and series ideas.
Estimate numerical error and stability limits.
Practice: Compare Euler and Runge-Kutta approximations against a known solution.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Approximate solutions using Euler, improved Euler, Runge-Kutta, and series ideas.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Compare Euler and Runge-Kutta approximations against a known solution.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Estimate numerical error and stability limits.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Quantitative warmup. Do not jump ahead until this one is correct.
Learning analysis
0/64
Tried
0
Correct
0%
Mastery
Weakest facet: Concept
Concept0/15
Fluency0/5
Application0/13
Analysis0/8
Exam Readiness0/7
Metacognition0/16
#1Quantitative warmupApplicationfoundationNext
A Series and numerical methods practice set has 18 questions. If 11 are complete, how many remain?
#2Mathematical reasoningConceptfoundation
Which habit best fits a serious math solution?
#3Unit readinessConceptfoundation
Which target best matches the Differential Equations unit "Series and numerical methods"?
#4Practice artifactApplicationfoundation
Which practice artifact should you produce for "Series and numerical methods" before asking a tutor for help?
#5Unit targetConceptfoundation
Which target best proves readiness for "Series and numerical methods"?
#6Second targetConceptfoundation
Which second target belongs to "Series and numerical methods"?
08
Applications capstone
Model circuits, mixing, epidemics, mechanics, and coupled systems.
Communicate model limits honestly.
Practice: Build a full ODE case study with model, solution method, validation, and sensitivity check.
Unit work plan
1
Source study
Start with 18.03 Differential Equations and Calculus textbooks. Take notes until you can explain: Model circuits, mixing, epidemics, mechanics, and coupled systems.
2
Foundation gate
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
3
Transfer gate
Produce the assignment artifact, then pass the application and analysis checks tied to: Build a full ODE case study with model, solution method, validation, and sensitivity check.
4
Repair loop
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
5
Tutor handoff
Bring your attempted work, the exact missed check, and one question about: Communicate model limits honestly.
Sequenced original practice checks
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.