Skip to content

Marker Sessions

Library Start here Tutorial Kids Account

Loading…

Why I built this The method Tutorial Pricing FAQ Guiding principles Legal Contact

Marker Sessions: tags

933 tags

Browse sessions by theme instead of category.

Frequently used (42)

Format, pacing, and logistics tags that show up across many sessions.

materials required (190)discussion-heavy (187)standalone (176)low energy (165)solo kid (161)seated/conversational (153)part of a train (132)closed/resolves neatly (128)hands-on (107)long (82)hands-on/build (77)role-play/kid-in-character (77)Physics & Astronomy (68)medium (66)no materials needed (64)age-skew older (56)materials optional (53)indoor (41)open-ended/no-clean-answer (32)Technology & Engineering (28)medium energy (27)Math & Logic (24)short (24)Biology & Nature (23)Philosophy & Psychology (23)Geography (22)Economics & Business (20)History & Civics (19)sensitive topic (19)Art & Music (18)Statistics & Critical Thinking (18)Chemistry (16)Language & Communication (16)outdoor (15)open-ended (13)logic (10)geology (9)role-play (8)needs-multiple-kids/siblings (7)capstone session (6)math (6)needs multiple kids (5)

Specific topics (891)

What a session is actually about, mostly used on one or two sessions each.

1854 cholera outbreak (1)AND OR NOT gates (1)ASCII (1)Abraham Wald (1)AdS/CFT correspondence (1)Age of Exploration (1)Age of Exploration legacy (1)Andy Warhol (1)Archimedes' principle (2)Australia (1)Barnum effect (1)Bell's theorem (1)Bernoulli's principle (1)Big Bang (3)Big O notation (1)Black Death (1)BlackRock and Vanguard (1)Brownian motion (1)Caesar cipher (1)Cartesian coordinate system (1)Champollion (1)Clarence Birdseye (1)Columbian exchange (1)Columbus (1)DNA structure (1)Descartes (1)Doppler effect (2)Douglas Adams puddle (1)Drake equation (1)Dunning-Kruger effect (1)Earth's internal structure (1)Earth's rotation (3)Einstein (1)Enigma machine (1)Estimation (1)Euler (1)Fermi estimation (1)Fermi paradox (1)Fermi-style reasoning (1)Flatland analogy (1)For Parents (1)Foundations (1)France Iraq United States (1)GPS (2)Galilean relativity (1)Galileo (1)Game of Thrones riddle (1)Gardner Museum heist (1)Great Filter (1)Great Schism (1)Hadley cell (1)Hawking radiation (1)Higgs field (1)Hobbes Locke Rousseau (1)IP addresses (1)ISS weightlessness (1)International Date Line (1)John Snow (1)Joseph Nye (1)Julius Caesar (1)Kahneman and Tversky (1)Kepler's laws (1)Konigsberg bridge problem (1)Laplace's demon (1)Lavoisier (1)London vs Manhattan (1)Luhn algorithm (1)MRI (1)Maillard reaction (1)Martin Luther (1)Maslow's hierarchy of needs (1)Max Weber (1)Maxwell's equations (1)Mercator (1)Method (1)Minard visualization (1)Monty Hall problem (1)Moore's Law (1)Napoleon (1)Nash equilibrium (1)Newton's cannonball (1)Newton's laws (2)Newton's second law (1)Noether's theorem (1)North Pole (1)Ohm's law (1)Pauli exclusion principle (1)Penrose diagrams (1)Plato's Theory of Forms (1)Plato's allegory of the cave (1)Polya problem-solving method (2)Polya's problem-solving method (1)Protestant Reformation (1)Proto-Indo-European (1)Punnett square (1)Pythagorean theorem (2)Pythagorean theorem application (1)QR codes (1)RGB and CMYK (1)Renaissance painting (1)Richard Feynman (2)Roman Empire (1)Rosetta Stone (1)Russell's paradox (1)Rutherford gold foil experiment (2)Sapir-Whorf hypothesis (1)Ship of Theseus connection (2)Standard Model (3)Stephen Hawking's experiment (1)Strait of Hormuz (1)Suez Canal (1)Sumer (1)TCP (1)Tacoma Narrows Bridge (2)Taoism (1)Titanic (1)UDP (1)UPC code (1)Van Halen M&M story (1)Vercingetorix (1)WWI (1)WWII (1)WWII codebreaking (1)Weimar Germany (1)XOR gate (1)Zeno's paradox (1)absolute zero (1)abstract thinking (1)abstraction (1)acceleration (1)acids and bases (1)action potential (1)actuarial pricing (1)adder circuit (1)additive vs subtractive color mixing (1)aerodynamics (3)aesthetics (2)affirming the consequent (1)air conditioning (1)air resistance (1)algebra (1)algorithms (1)alliance system (1)alphabet origins (1)alveoli (1)ambiguity (1)ambiguous evidence (1)anchoring (1)ancient Athens (2)ancient Rome (1)ancient city placement (1)ancient history (1)angle of attack (1)animal senses (1)ant colonies (1)antagonistic muscle pairs (1)anthropic principle (1)apple browning (1)argument structure (1)argumentation (1)arithmetic (1)arrow of time (1)art forms taxonomy (1)art history (2)art theft (1)artistic communication (1)assumptions (1)astrobiology (1)astronomical scale (2)astronomy (1)atmospheric circulation (2)atmospheric pressure (2)atomic structure (3)atoms (2)auctions (1)aura (1)authenticity (1)authorship (1)aviation safety statistics (1)backward moves (1)balancing chemical equations (1)ballast tanks (1)banking history (1)barcodes (1)barter system (1)base rate fallacy (1)basic research (1)beef vs chicken vs beans (1)bias (2)binary numbers (2)binary search (1)biology (1)biology criteria (1)biomedical engineering (1)black hole causal structure (1)black hole entropy (1)black holes (2)blind spot (1)block and tackle (1)blood chemistry balance (1)blood vessels (1)body systems integration (1)bone marrow (1)bones (1)brain (1)brand ownership (1)breathing mechanics (1)bubble sort (1)bubonic plague (1)buoyancy (4)business simulation (1)business structure (1)calculus foundations (1)can be outdoor (3)cannon warfare (1)captive markets (1)car-friendly (1)carbon emissions (1)cardinal directions (1)cardinality of infinity (1)cartography history (1)castle architecture (2)category errors (1)causality (2)cell biology (1)cell membrane (1)cells (1)cellular network handoff (1)cellular respiration (1)certainty vs correctness (1)chain reactions (1)chaos theory (1)charm pricing (1)check digit (1)chemical bonding (1)chemical engineering (1)chemical reactions (2)chessboard rice problem (1)chiaroscuro (1)chromatography (1)church history (1)circuit breakers (1)circuits (1)circulation (1)circulatory system (1)city grids (1)civil engineering (2)climate change (1)climate geography (1)clock synchronization (1)close reading (2)closed-loop circuit (1)cochlea frequency mapping (1)coevolution (1)cognitive bias (2)colligative properties (1)colonial place names (1)colony collapse disorder (1)color and composition choices (1)combustion (1)communication without language (2)comparative advantage (1)comparative linguistics (1)competition (1)competition policy (1)complex systems (1)compound interest (1)computational thinking (1)concept of debt (1)conclusions (1)conditional probability (1)conduction (1)confirmation bias (1)confounders (1)conglomerates (1)conic sections (1)connotation vs denotation (1)consciousness (2)consequentialism (1)conservation of angular momentum (1)conservation of energy (1)conservation of mass (1)conservation of momentum (1)constant velocity (1)constraint satisfaction (1)consumer behavior (3)continental drift (2)contradiction (1)control groups (1)convergence (1)convergent evolution (1)cooking science (1)cooperation vs defection (1)coordinate grid (1)corporate ownership (1)corporate personhood (1)corporations (1)correlation vs causation (1)cosmic distance ladder (1)cosmic rarity (1)counterintuitive statistics (1)counterweight systems (1)counting systems (1)courage and fear (1)credit and debt (1)critical mass (1)critical thinking (1)crude oil (1)cryptography (2)crystal structure (1)cuisine and geography (1)cultural conventions (1)cuneiform (1)curved spacetime (1)decipherment (1)decline and fall (1)decomposition (1)decoy pricing (1)deductive elimination (1)deductive reasoning chain (1)definition of knowledge (1)definition of life (2)democracy (1)density (4)deontology (1)derivative (1)desert formation (1)design thinking (1)detective thinking (1)determinism (1)diaphragm (1)digestion (1)digestive system (1)dimensions (1)diminishing returns (1)diplomatic crisis (1)disagreement vs contradiction (1)disorder (1)dispersion of light (1)dividends (1)division of labor (1)dominant and recessive alleles (1)dominant strategy (1)double coincidence of wants (1)double loop circulation (1)double-slit experiment (1)doubling (1)dualism (1)earthquake mechanics (1)ecological succession (1)ecology (3)economics basics (2)edge cases (1)efference copy (1)elections (1)electrical engineering (2)electrical fuses (1)electrical safety (1)electricity (3)electrochemical cells (1)electromagnetic induction (1)electromagnetic waves (2)electron cloud (1)elements (3)ellipse construction (1)emergence (2)emergent properties (1)emotionally intense (3)empty space in atoms (2)energy (1)energy conservation (1)engineering branches (1)engineering failure (1)entropy (1)environmental determinism (1)environmental economics (1)enzymes (1)epidemiology (1)epistemology (3)equations as balance (1)equilibrium (1)erosion by sediment (1)error correction (1)error detection (1)escalator step geometry (1)escape velocity (3)ethics (1)etymology (1)event horizon (1)evidence (2)evidence-based reasoning (1)evolution (1)existential risk (2)exothermic vs endothermic (1)expected value (1)exponential growth (2)externalities (1)extraterrestrial life (2)fall of Rome (1)falsification (2)family tree (1)fermentation (2)feudalism (1)feudalism collapse (1)fiat money (1)film scoring (1)filtration (1)fine-tuning (1)finite signal speed (1)food chemistry (1)food history (1)food systems (1)force (2)forces (1)fossil fuels (1)four branches of math (1)four stages of competence (1)fourth dimension (1)fractional distillation (1)fractions (1)framing effect (1)framing effects (1)fraud (1)free fall (2)free will (1)freezing point depression (1)frequency (1)frequency analysis (1)frequency and pitch (1)friction (1)fundamental attribution error (1)fundamental constants (1)game theory (1)gas exchange (1)general relativity (2)general relativity vs quantum mechanics (1)genetics (2)geodesics (1)geography and history (1)geometry (2)geometry and algebra unification (1)geometry riddle (1)geopolitics (3)gerrymandering (1)global shipping chokepoints (1)globe (1)gold standard (1)government function (1)graph theory (1)gravitational waves (1)gravity (3)gravity as geometry (1)great circle routes (1)hard power vs soft power (1)heart (1)heat pump (1)heat transfer (1)helicopter flight (1)hidden premises (1)hieroglyphs (1)high energy (3)higher dimensions (1)historical engineering (1)historical evidence (3)history of mathematics (1)history of money (1)history of numbers (1)history of physics (1)history of technology (2)history of thermodynamics (1)holographic principle (1)honeycomb geometry (1)how computers work (1)human motivation (1)hydrogen and oxygen (1)hyperbola (1)hypercube (1)hyperinflation (1)hypothesis testing (1)ill-formed questions (1)immune response (1)imperial overextension (1)inclined plane (1)index funds (1)indivisibility (1)indoor or outdoor (1)inference (1)inference structure (1)infinite series (1)infinity (2)inflation (1)influence and coercion (1)informal fallacies (1)information technology (1)infrastructure (1)inheritance (1)insects (1)instantaneous velocity (1)insurance (1)integral (1)interdisciplinary science (1)internet history (1)internet infrastructure (1)interstellar distances (1)invasion of Russia (1)invented vs discovered debate (1)invention of writing (1)invention of zero (1)joint attention (1)justified true belief (1)kidneys (1)kinetic energy (1)kinetic theory (1)kinetic theory of heat (1)labor leverage (1)language and thought (1)language families (1)law of large numbers (1)leading questions (1)learning process (1)legitimacy (1)lever (1)lever principle (1)liar's paradox (1)lift (1)light and pigment physics (1)light and playful (3)light clock (1)light cones (1)light scattering (1)light travel time (1)light-years (2)lightning train thought experiment (1)limited liability (1)limits (1)linear perspective (1)linear vs exponential growth (1)loaded language (1)logarithms (1)logic gates (1)logic puzzles (1)logical consistency (1)looking into the past (1)lungs (1)major and minor keys (1)map orientation (1)map perspective (1)map projections (1)marginal utility (1)market bubbles (1)market concentration (1)market structure (1)marsupials (1)mass (1)mass production art (1)mass vs weight (1)math as universal language (2)mathematical proof (1)matter vs energy (1)meaning by agreement (1)measurement problem (2)mechanical advantage (3)mechanical advantage intro (1)mechanical engineering (3)mechanical reproduction (1)medieval siege warfare (1)medieval trade routes (1)mental math (1)merge sort (1)metacognition (1)metaphor (1)metaphysics (1)metrology (1)microwave cooking (1)military logistics (1)military strategy (1)military technology (1)mirror reflection (1)missing data (1)mitochondria (1)mock trial (1)molecules (1)money supply (1)monopoly pricing (1)moral philosophy (2)motion (1)motion vs stillness (1)mountain building (1)muscular system (2)music and emotion (1)mutual benefit (1)natural frequency (1)natural selection (1)necessary and sufficient conditions (1)negative numbers (1)nephrons (1)nervous system (2)network resilience (1)neurons (1)neuroscience (1)neutron star (1)night sky (1)no largest number (1)nodes and edges (1)north-up convention (1)nuclear fission (1)nuclear fusion (2)nuclear power vs weapons (1)nucleus (1)number line (1)numerator and denominator (1)nutrient absorption (1)objective truth (1)observation and inference (2)observation vs assumption (1)observational (4)olfactory receptors (2)open-ended process (1)opportunity cost intro (2)opposites (1)optical illusions (4)orbital mechanics (2)order-of-magnitude reasoning (2)oscillation (1)oxidation (1)packet switching (1)parabola (1)parity argument (1)part-whole relationships (1)pattern of revolutions (1)pendulums (1)perception vs reality (2)perfect circle (1)periodic table (1)personal music choice (1)persuasion (3)perverse incentives (1)petrochemicals (1)petroleum (1)phantom vibration syndrome (1)phase change (2)philosophy (1)philosophy of mathematics (1)photography and painting (1)photovoltaic effect (1)physical properties (1)physical vs chemical change (1)physics (1)physics of sound (3)physics of waves (1)pictograms (1)pigeonhole principle (1)pin-tumbler locks (1)pinhole imaging (1)placebo (1)plate tectonics (1)poetic analysis (1)political authority (1)political philosophy (2)pollination (1)potential energy (2)power (1)predictive coding (1)premises (1)premises and conclusions (1)premiums (1)price discovery (1)price gouging (1)pricing psychology (2)primary vs secondary sources (1)prime numbers (1)principle of least action (1)printing press (2)prisoner's dilemma (1)probability (3)probability estimation (1)problem of induction (1)problem solving (1)problem-solving toolkit (1)process of elimination (1)projectile motion (1)proof by contradiction (1)prosody (1)protein denaturation (1)proxy indicators (2)psychology (1)public goods and free riders (1)public-key encryption (1)pulley (1)pulse (1)push and pull (1)quality control (1)quantitative reasoning (1)quantization (1)quantum entanglement (2)quantum gravity (1)quantum mechanics (4)quantum randomness (1)quantum superposition (3)quantum tunneling (1)quick freezing (1)radio (2)radio waves (2)randomized controlled trial (1)reaction rate (1)recursion (1)reference frames (2)reflex arc (1)refraction (2)refrigerant cycle (1)refrigeration (1)regional ingredients (1)regression to the mean (1)relative dating (1)relative motion (2)relativity of simultaneity (2)religious history (1)resistance (1)resonance (2)respiration (1)respiratory system (1)rhythm and syncopation (1)risk perception (2)river civilizations (1)road salting (1)rock cycle (2)routers (1)rule of thirds composition (1)rusting (1)salt and ice (1)sample size (2)scarcity (1)science vs engineering (1)scientific method (1)scientific method application (1)scientific proof (1)screw (1)second law of thermodynamics (1)selective attention (2)self-organization (1)self-reference paradox (1)self-talk (1)semiconductors (1)semiotics (2)senses and time (1)separation of powers (1)set theory (1)shadows (2)shared risk (1)shares and ownership (1)ship design (1)short circuits (1)siege of Alesia (1)simple machines (1)simulation argument (1)siphon effect (1)skeletal system (1)small intestine (1)social contract theory (1)software engineering (1)solar system scale model (1)solubility and saturation (1)solving for x (1)song lyrics (2)sorting algorithms (1)sorting exercise (1)sortition (1)sound localisation (1)sound symbolism (1)source bias (1)source reliability (2)spacetime diagrams (1)spacetime mapping (1)spaghettification (1)spatial reasoning (1)special relativity (2)spectroscopy (1)speed formula (1)speed of light (2)speed of light constancy (1)spice trade (1)spray arm rotation (1)spurious correlations (1)standard time history (1)star stuff (1)startle response (1)state-space search (1)states of matter (1)statistical fallacies (2)statistical reasoning (1)steel-manning (1)stellar evolution (1)stomach (1)stress and emphasis (1)structural bias (1)structural mapping (1)structural rigidity (1)subtext (2)supernova (1)supply and demand (1)supply chains (1)survey design (1)survivorship bias (1)survivorship bias connection (1)symbols (1)symmetry (1)systems thinking (1)tally systems (1)technology timeline (1)telegraph (1)temperature (1)temperature scale (1)tempo (1)tendons and ligaments (1)tension and gravity (1)tension and resolution (music) (1)tesseract (1)text message miscommunication (1)the mole (1)theory of relativity (1)thermal equilibrium (1)thought experiment (2)tickling (1)timbre (2)time dilation derivation (1)time travel (1)time zones (2)tit-for-tat (1)tobacco and cancer history (1)tools vs machines (1)tornado formation (1)torque (2)trace italienne (1)traceroute (1)trade (2)trade markup economics (1)trade routes (1)tragedy of the commons (1)trebuchet (1)triangulation (1)tripwire testing (1)trolley problem (1)truth vs belief (1)typography (1)uncertainty in history (1)uncertainty principle (1)unification problem (1)universal grammar (1)unstoppable force paradox (1)untranslatable words (1)urban geography (1)urban planning (1)urinary system (2)vacuum fan pressure (1)valid arguments (2)value creation (1)value of art (1)variables (1)vector addition (1)vectors (1)veil of ignorance (1)villi (1)viral infection (1)virtue ethics (1)visual analysis (1)volcanic eruption style (1)voltage surge (1)voluntary exchange (1)water (3)water displacement (2)water footprint (1)wave propagation (1)wave speed (1)wave-particle duality (1)wavelength (3)waves (2)weather forecasting (1)wedge (1)what is a tool (1)what is math (1)wheel and axle (1)white dwarf (1)wind energy limits (1)wing design (1)wolf-goat-cabbage puzzle (1)wonder (1)wood vs gold (1)word invention (1)word order (1)wug test (1)yin-yang (1)