Cell World
AP Biology and introductory biology: cell structure, membrane transport, signaling, and energy exchange
Cell Architecture And Membranes: membranes100 interactive Worlds across 12 subject areas. Choose a grade band to see its mission path.
AP Biology and introductory biology: cell structure, membrane transport, signaling, and energy exchange
Cell Architecture And Membranes: membranesAP Biology and genetics: DNA, gene expression, inheritance, mutation, and biotechnology evidence
Genetics And Information Flow: inheritanceAP Biology systems, anatomy, and physiology: homeostasis, organ-system feedback, transport, signaling, and clinical reasoning
Metabolism And Enzymes: feedbackAP Biology: natural selection, population genetics, speciation, and evidence for evolution
Evolutionary Mechanisms: selectionEcology, environmental science, and AP Biology ecology: field evidence, food webs, energy flow, populations, feedback, matter cycles, biodiversity, disturbance, climate coupling, management tradeoffs, and ecosystem transfer
Ecosystem And Conservation Biology: ecosystem functionAP Environmental Science and Earth science: climate systems, feedbacks, forcing, carbon, and uncertainty
Open exploration missionAP Physics: forces, motion, Newtonian mechanics, fields, and energy reasoning
derivative as velocity: differentiate traceAP Physics and astronomy: gravitation, orbital motion, circular motion, energy, and orbital systems
uncertainty in motion data: fit noisy sensor dataAP Physics: waves, interference, sound, light, resonance, and signal behavior
friction model: run constrained motionAP Physics: geometric optics, ray tracing, lenses, mirrors, wave optics, and measurement
Trigonometry For Indirect MeasurementAP Chemistry: atomic structure, bonding, molecular geometry, polarity, and properties
Atomic And Molecular Structure: Model quantum modelAP Chemistry: stoichiometry, thermodynamics, kinetics, equilibrium, and reaction evidence
Atomic And Molecular Structure: Run molecular structureElementary math: place value, base-ten structure, operations, and number sense
Boundary And Solution SetElementary and middle-school math: fractions, ratios, equivalence, operations, and proportional reasoning
Multi-Step Equation Flight PlanAlgebra I and Algebra II: variables, equivalence, equations, functions, systems, quadratics, and modeling
Function Machine CommissioningAlgebra: solving equations, inverse operations, equivalence, and solution validation
Balance Both SidesRatios, rates, proportional reasoning, percent, scale, and linear relationships
Slope Is A Rate Of ChangeAlgebra, Precalculus, and modeling: functions, transformations, rates, and graphical evidence
composition: compose machinesGeometry: definitions, constructions, congruence, similarity, transformations, trigonometry, and proof
Definitions Are Tools, Not DecorationsMathematical reasoning: proof, logic, claims, warrants, counterexamples, and argument
trig identity: verify identityMathematical modeling: reading, representation, equations, constraints, and solution interpretation
outliers: mark outlierCircuits, digital logic, and AP Computer Science systems: state, gates, truth tables, debugging, and repair
Capstone: Accountable Computing System: Run readiness gateAP Computer Science: algorithms, state tracing, debugging, tests, and program correctness
CS1 Program Semantics: Model operational semanticsComputer science foundations, AP Computer Science, and software reliability: safe code execution, input/output traces, variables, branches, loops, functions, data structures, tests, debugging, algorithms, async systems, and transfer
Open exploration missionData & Analysis, CSTA 2026: the relationship between a place and the record of a place -- what an instrument meets, what it misses, and what the resulting sheet licenses anyone to say
Open exploration missionAP Statistics: sampling, inference, probability, regression, and uncertainty
distribution shape: sort dataEngineering design and physics: structures, load paths, stress, deflection, and safety-factor evidence
traceability: trace requirementEngineering design: fabrication, materials, joints, tolerances, and failure-mode evidence
Open exploration missionEngineering design: gears, linkages, cams, mechanical advantage, motion conversion, and the trade law
Open exploration missionEngineering design: human-centered design, requirement ownership, mismatch-locus analysis, and the run as certificate
Open exploration missionEngineering design: sensors, actuators, feedback loops, control systems, and fail-safe behavior
Open exploration missionEngineering design: water balance, energy conservation, waste flows, environmental systems, and the keeper-and-neighbor rule
Open exploration missionChemistry and materials science: synthesis, purification, spectroscopy, and material properties
Atomic And Molecular Structure: Defend model limitsBiotechnology and biology: experimental design, lab technique, data interpretation, and bioethics
Biological Molecules And Water: biomoleculesBiology and anatomy: structure-function relationships, comparative anatomy, and evidence-based observation
Open exploration missionEnergy systems, nuclear physics, and chemistry: reaction rate, heat, stability, and safety control
Stoichiometry And Reactions: Defend yieldAstronomy and physics: stellar life cycles, spectra, gravity, luminosity, and evidence
Open exploration missionEarth science and geospatial engineering: terrain, maps, hazard modeling, and spatial evidence
verification case: run edge caseEarth and geospatial science: map evidence, terrain, watersheds, hazards, remote sensing, land use, and decision defense
Open exploration missionEarth & Space Science: celestial observation, lunar phases, stellar identification, atmospheric optics, and light pollution analysis
Open exploration missionLogic reasoning
Open exploration missionAP Physics and engineering: pressure, density, buoyancy, Reynolds number, viscosity, and flow
power rate: measure powerAerospace engineering, AP Physics, and first-year engineering design: flight dynamics, telemetry, thrust, drag, mass properties, thermal protection, guidance, abort logic, reentry, and flight-readiness review
acceptance test: write acceptance testRobotics engineering, mechatronics, and AP/first-year engineering design: workcell commissioning, kinematics, grasping, sensing, path planning, control loops, quality inspection, human-robot safety, autonomy, and fault recovery
stakeholder requirement: weight stakeholdersBusiness strategy
Open exploration missionClinical judgment
Open exploration missionCybersecurity and computing systems (2026 CSTA PK-12): reachability analysis, device retention, segmentation, structural fixes, and incident response as capstone
Computer Systems And Digital Logic: Model logic signalComputing & Society, CSTA 2026: History of Computing, Emerging Technologies, Humans & Computing, Career Exploration -- nothing in computing is weather, and every behavior was decided at a table under constraints
Open exploration missionNarrative reasoning
Open exploration missionELA and writing: reader interpretation, procedural clarity, revision, and audience-aware communication
Open exploration missionAP US History, AP World History, and AP African American Studies: sourcing, DBQ, causation, and complexity
Native Societies Before European ContactNarrative reasoning
Open exploration missionNarrative reasoning
Open exploration missionNarrative reasoning
Open exploration missionNarrative reasoning
Open exploration missionNarrative reasoning
Open exploration missionClinical Nursing Residency: deterioration recognition, medication safety, communication, triage, and professional judgment under ambiguity
Open exploration missionOptometry Clinical Residency: ocular examination, refractive assessment, anterior/posterior segment pathology, differential diagnosis, and treatment planning
Open exploration missionIntroductory Quantum Computing: qubits, gates, superposition, measurement, entanglement, and simple circuits
Open exploration missionElementary Math: area, perimeter, measurement concepts
Open exploration missionElementary Math: multiplication models, arrays, area model
Open exploration missionElementary Math: division models, sharing, grouping, long division
Open exploration missionElementary Math: decimal-fraction connections, ordering, operations
Open exploration missionElementary Math: patterns, sequences, generalization
Open exploration missionElementary Geometry: shapes, properties, classification, symmetry
Open exploration missionPre-Algebra: coordinate plane, plotting, transformations, distance
Open exploration missionElementary/Middle Geometry: angle measurement, classification, relationships
Open exploration missionGeometry: surface area, volume, 3D solids
Open exploration missionStatistics: probability models, experimental vs theoretical, compound events
Open exploration missionPre-Algebra / Algebra 1: linear equations, slope, intercepts, parallel/perpendicular lines
Open exploration missionGeometry / Pre-Algebra: Pythagorean theorem, distance formula, radical simplification
Open exploration missionStatistics / Algebra 1: scatter plots, trend lines, correlation, regression
Open exploration missionPre-Algebra / Algebra 1: exponents, rules, scientific notation, orders of magnitude
Open exploration missionPre-Algebra / Algebra 1: functions, representations, rate of change
Open exploration missionElementary Mathematics: data displays, picture graphs, bar graphs, line plots
Open exploration missionElementary Mathematics: telling time, counting money, measurement, unit conversion
Open exploration missionPre-Algebra / Grade 6-7: ratios, rates, percents, proportional relationships
Open exploration missionPre-Algebra / Algebra 1: expressions, order of operations, like terms, equivalence
Open exploration missionPre-Algebra / Algebra 1: inequalities, graphing, solution sets, flip rule
Open exploration missionPhysical Science: states of matter, phase changes, particle model, conservation
Open exploration missionLife Science: plant structures, photosynthesis, life cycles, seed dispersal
Open exploration missionEarth Science: weather variables, water cycle, severe weather, weather vs climate
Open exploration missionLife Science: major body systems, organs and functions, system interactions
Open exploration missionLife Science: inherited vs learned traits, variation, parent-offspring resemblance
Open exploration missionBiology: mitosis, meiosis, chromosomes, crossing over, cell cycle
Open exploration missionEnvironmental Science: biodiversity, pollution, resource use, conservation
Open exploration missionBiology: natural selection, adaptation, fitness, common ancestry evidence
Open exploration missionEcology: food chains, food webs, trophic levels, energy flow, disruption cascades
Open exploration missionMicrobiology: bacteria vs viruses, immune response, antibiotic resistance, vaccination
Open exploration missionK-2 Life Science: living needs, body and plant parts, parent-offspring similarity, habitats, pollination and seed dispersal
Open exploration missionPhysical Science: energy forms, transfers, transformations, conservation
Open exploration missionPhysical Science: magnetic poles, field lines, electromagnets, compass, materials
Open exploration missionPhysical Science: vibrations, pitch, volume, sound speed through media, echoes
Open exploration missionPhysical Science: push, pull, friction, gravity, balanced forces, simple machines
Open exploration missionPhysical Science: light sources, shadows, reflection, refraction, color, materials
Open exploration missionEarth and Space Science: planets, orbits, scale, moon phases, seasons
Open exploration missionEarth Science: rock types, rock cycle, minerals, soil formation, fossils
Open exploration missionEarth Science: water cycle, watersheds, groundwater, erosion, water quality
Open exploration missionEarth and Space Science: stars, galaxies, universe scale, EM spectrum, telescopes
Open exploration missionEarth Science: fossils, geologic time, mass extinctions, relative and absolute dating
Open exploration mission