Subject	Title	Tags	Age	Duration	Languages
Subject	Title	Tags	Age	Duration	Languages
	The dominant eye	biology, senses, vision, perception, left-handed, right-handed, critical thinking	6 – 10	1 min	pt , es , en
	Yeast's feast	biology, microorganism, yeast, fungi, life, metabolism	8 – 16	15 min	pt , es , en
	Temperature perception	biology, senses, adaptation, skin, temperature, perception	7 – 10	4 min	pt , es , en
	The myth of the tongue map	biology, senses, taste, tongue, critical thinking	6 – 10	5 min	pt , es , en
	Two eyes	biology, senses, vision, stereopsis	6 – 12	3 min	pt , es , en
	Breathing water	biology, physics, breath, water, human body, evaporation, condensation, skin, lung	5 – 7	5 min	pt , es , en
	Response time	biology, physics, human body, senses, nervous system, free fall, reaction, interdisciplinary	9 – 16	4 min	pt , es , en
	Cold breeze	biology, physics, skin, perspiration, water, human body, evaporation, cooling	9 – 12	3 min	pt , es , en
	Reaction rate	chemical kinetics, speed of chemical reactions, designing experiments	13 – 16	15 min	pt , es , en
	Raising raisins	chemistry, catalysis, carbon dioxide, carbon acid, equilibrium	15 – 17	4 min	pt , es , en
	Chirality	chemistry, chirality, symmetry, molecules	14 – 18	3 min	pt , es , en
	Floating seeds	chemistry, density, solution	8 – 12	6 min	pt , es , en
	Heat 'n motion	chemistry, kinetic theory, heat, brownian motion, designing experiments	14 – 17	3 min	pt , es , en
	Verdigris	chemistry, Verdigris, corrosion	14 – 18	5 min active, in total 30 min	pt , es , en
	Warm steel wool	chemistry, oxidation, exothermic	15 – 18	10 min	pt , es , en
	Card stack	physics, maths, mechanics, forces, center of gravity	14 – 16	5 min	pt , es , en
	Fleeing pepper	chemistry, surfactant, polar, apolar, hydrophilic, hydrophobic, surface tension, water	15 – 18	5 to 20 min	pt , es , en
	A wick game	chemistry, water, capillary action	15 – 17	10 min active, in total about 30 min	pt , es , en
	Capillary forces	chemistry, physics, capillary action, water, oil	15 – 18	10 min	pt , es , en
	Drops on a coin	chemistry, water, surface tension, cohesion, hydrogen bonds, surfactant	14 – 17	3 min	pt , es , en
	Bending water	chemistry, physics, water, dipole moment, electrostatics, hydrogen bonds, triboelectric effect	15 – 17	5 min	pt , es , en
	Water floating and sinking in water	chemistry, physics, water, ice, density, convection	11 – 16	5 min	pt , es , en
	Colder than ice	chemistry, physics, water, salt, ice, crystals, endothermic, melting	15 – 18	10 min	pt , es , en
	Salt and Ice	chemistry, physics, water, salt, ice, equilibrium, melting	15 – 19	10 min	pt , es , en
	Dark side of the moon	geography, astronomy, moon, tidal locking	9 – 12	7 min	pt , es , en
	The true size of Brazil	geography, maths, projections, maps, globe, critical thinking	14 – 16	4 min	pt , es , en
	Free falling	physics, mechanics, free fall, acceleration, gravity	14 – 16	5 min	pt , es , en
	Journey around the world	geography, Earth, globe, travel	9 – 18	5 – 15 min	pt , es , en
	Arithmagic	maths, arithmetic	7 – 16	5 – 15 min	pt , es , en
	Factoring	maths, arithmetic, factoring	8 – 16	5 – 15 min	pt , es , en
	Liquid fractions	maths, fractions, water	10 – 13	5 min	pt , es , en
	Not everything has two sides	maths, geometry, topology, Möbius strip	10 – 18	12 min	pt , es , en
	Heads 'n tails	maths, probability, Bernoulli trial, statistics	15 – 17	10 min	pt , es , en
	Rolling the dice	maths, probability, probability distribution, sample size, statistics, stochastic	15 – 17	10 min	pt , es , en
	Guess my rule – like a scientist	maths, physics, chemistry, biology, scientific method, designing experiments	10 – 125	10 min	pt , es , en
	Mirror symmetry	maths, symmetry, geometry	6 – 16	3 – 10 min	pt , es , en
	Wobbling loops	physics, mechanics, vibration, resonance, earthquakes	12 – 16	10 min	pt , es , en
	Making stress visible	physics, optics, polarization, colors	15 – 18	5 min	pt , es , en
	How many colors has your display?	physics, optics, colors, additive color mixing, vision	15 – 17	8 min	pt , es , en
	Weight of air	physics, air pressure, forces	15 – 17	4 min	pt , es , en
	Draining race	physics, air pressure	9 – 15	15 min	pt , es , en
	The invisible force within (a balloon)	physics, chemistry, molecules, air pressure, gas, Newton's laws	12 – 16	3 min	pt , es , en
	Believe your eyes, don't be deceived by 'public opinion'	physics, biology, optics, vision, laser, critical thinking	15 – 125	2 min	pt , es , en
	Archimedes over board	physics, density, buoyancy, Archimedes' principle, volume, weight	9 – 12	3 min	pt , es , en
	Eddy currents	physics, electromagnetism, Eddy currents	16 –18	5 min	pt , es , en
	Electromagnet competition	physics, electromagnetism, electricity, magnetism, designing experiments	16 –18	15 min	pt , es , en
	Ørsted's discovery	physics, electromagnetism, electricity, magnetism, Lorentz force	16 –18	2 min	pt , es , en
	A magic wand?	physics, electrostatics, triboelectric effect, charge induction, discharge	16 –18	5 min	pt , es , en
	Flying with both Bernoulli and Newton	physics, flying, lift, Bernoulli, Newton's laws, air pressure, critical thinking	15 – 17	2 min	pt , es , en
	Magnetism	physics, magnetism, magnetic poles	8 – 12	15 min	pt , es , en
	Magnetic reach	physics, magnetism, ferromagnetic, magnetic field	8 – 14	4 min	pt , es , en
	Mapping the magnetic field	physics, magnetism, magnetic field	8 – 12	4 min	pt , es , en
	Do equal poles attract each other?	physics, magnetism, magnetic field, magnetic shielding	9 – 17	2 min	pt , es , en
	Swinging fruits	physics, math, mechanics, center of gravity, angular momentum, balance, geometry	14 – 17	3 min	pt , es , en
	Coin Billiard	physics, mechanics, elastic collisions, kinetic energy	10 –16	3 min	pt , es , en
	Getting a feeling for spring systems	physics, mechanics, forces, Hooke's law, spring, springs in series, springs in parallel	14 – 16	2 min	pt , es , en
	Pencil pulley	physics, mechanics, forces, pulley, machine	12 – 16	3 min	pt , es , en
	Building bridges	physics, mechanics, forces, static	14 – 16	20 – 30 min	pt , es , en
	Two falling coins	physics, mechanics, free fall, trajectory, acceleration, gravity	12 – 16	4 min	pt , es , en
	Self-balancing wand	physics, mechanics, friction, center of gravity, balance	12 – 16	1 min	pt , es , en
	Sliding	physics, mechanics, friction, inclined plane, designing experiments	14 – 16	15 min	pt , es , en
	Inertia and friction	physics, mechanics, friction, inertia, Newton's laws, static friction, kinetic friction	14 – 16	2 min	pt , es , en
	Inseparable books	physics, mechanics, friction, forces	14 – 16	8 min	pt , es , en
	Balancing stick	physics, mechanics, inertia, angular momentum, balance	14 – 17	4 min	pt , es , en
	Centrifugal lifting	physics, mechanics, inertia, centrifugal force	15 – 17	5 min	pt , es , en
	A simple pump	physics, mechanics, inertia, centrifugal force, pump	10 – 16	5 min	pt , es , en
	To and fro kinetic and potential energy	physics, mechanics, pendulum, energy, kinetic energy, potential energy, transformation of energy	12 – 16	5 min	pt , es , en
	Measuring 'g'	physics, mechanics, pendulum, oscillation, gravity	14 – 16	15 min	pt , es , en
	Feeling pressure	physics, mechanics, pressure	10 – 16	1 min	pt , es , en
	Mechanical resonance	physics, mechanics, resonance, spring, harmonic, oscillation	10 – 16	5 min	pt , es , en
	Hooke's law	physics, mechanics, forces, Hooke's law, spring	10 – 16	10 min	pt , es , en
	The true colors of white	physics, optics, light, colors, prism	9 – 16	10 min	pt , es , en
	Fingerprints	physics, optics, light, reflection, total internal reflection, water, designing experiments, critical thinking	10 – 12	2 min	pt , es , en
	Magnifying glass near and far	physics, optics, light, lenses, refraction, imaging, vision	9 – 14	5 min	pt , es , en
	Tunnel vision	physics, optics, light, mirror, absorption, reflection	8 – 12	3 min	pt , es , en
	Does a mirror really invert sides?	physics, optics, light, mirror, reflection, vision	8 – 12	5 min	pt , es , en
	Mirror targeting	physics, optics, light, mirror, reflection	7 – 10	15 min	pt , es , en
	Finding the mirror image	physics, optics, light, mirror, reflection	8 – 12	1 min	pt , es , en
	Curved mirrors	physics, optics, light, mirror, reflection, ray optics, concave mirror, convex mirror	8 – 12	3 min	pt , es , en
	Exploring mirrors	physics, optics, light, mirror, reflection, vision	8 – 12	7 min	pt , es , en
	The Law of Reflection	physics, optics, light, reflection, mirror	8 – 12	7 min	pt , es , en
	Total internal reflection	physics, optics, light, reflection, total internal reflection, water	10 – 12	3 min	pt , es , en
	Open spectrometer	physics, chemistry, optics, light, spectroscopy, diffraction, colors	15 – 18	15 min	pt , es , en
	Twisting light	physics, optics, polarization	16 – 18	1 min	pt , es , en
	The small bang theory of sound	physics, sound, sound waves	8 – 12	3 min	pt , es , en
	Beer bottle flute	physics, sound, standing waves	10 – 16	3 min	pt , es , en
	Double reed nuisance	physics, sound, standing waves, reed	6 – 10	5 min	pt , es , en
	Thermal insulation	physics, thermodynamics, thermal conductivity, ice, melting	16 – 18	4 min active, in total 10 min	pt , es , en
	Cutting through ice	physics, thermodynamics, thermal conductivity, ice, melting	16 – 18	5 min	pt , es , en
	Cold metal?	physics, biology, thermodynamics, thermal conductivity, temperature, perception, senses, skin	9 – 15	1 min	pt , es , en
	Feel your voice	physics, biology, sound, voice, sound waves, senses	8 – 12	1 min	pt , es , en
	The world seen through a pinhole	physics, optics, light, aperture, vision, imaging	8 – 12	2 min	pt , es , en
	Three lenses in a glass	physics, optics, light, lenses, refraction, index of refraction, water, oil	8 – 12	4 min	pt , es , en
	The Earth is.. ellipsoid	physics, geography, Earth, centrifugal force, weight, ellipsoid of revolution, mass, interdisciplinary	12 – 16	5 min	pt , es , en
	Find my direction magnetically	physics, geography, magnetism, compass, ferromagnetic, Earth	9 – 15	10 min	pt , es , en
	Where is the Earth's magnetic north pole?	physics, geography, magnetism, magnetic field, critical thinking	9 – 15	1 min	pt , es , en
	Mirror fractions	physics, optics, light, mirror, reflection, symmetry, fractions	8 – 12	5 min	pt , es , en
	Magnetic levitation	physics, magnetism, forces, designing experiments	9 – 12	3 min	pt , es , en
	Mendeleev's puzzle	chemistry, periodic table, elements	17 – 19	10 min	pt , es , en
	Voltaic pile	chemistry, electrochemistry, battery, redox reaction, galvanic cell	17 – 19	10 min	pt , es , en
	Anaglyphs – depth in colors	biology, physics, colors, vision, stereoscopic	15 – 17	5 min	pt , es , en
	Dice half-life	chemistry, maths, radioactive decay, exponential decay, logarithm	16 – 19	5 min	pt , es , en
	tap, tap – tap!, tap, tap	biology, communication, cognitive bias	9 – 90	5 min	pt , es , en
	Color relations	physics, biology, color, light, color mixing, complementary color, analytical thinking	12 – 16	15 min	pt , es , en
	Will it fall?	physics, mechanics, forces, angular momentum, belt friction, centrifugal forces, Atwood machine	13 – 16	6 min	pt , es , en