Explore hands-on, teacher-tested activities for the classroom and beyond.Explore hands-on, teacher-tested activities for the classroom and beyond. Filter & Sort Filter & Sort Sort by Sort by Title A-Z Title Z-A Shuffle Grade Bands 3-5 6-8 9-12 K-2 Pre-K Professional Development Subject Arts Astronomy and Space Sciences Space Exploration Planetary Science Biology Evolution Ecology Anatomy and Physiology Molecular and Cellular Biology Genetics Neuroscience Chemistry States of Matter Materials and Matter Food and Cooking Combining Matter Data Visualization Modeling and Simulations Data Collection and Analysis Earth Science Oceans and Water Atmosphere Geology Engineering and Technology Design and Tinkering Real World Problems and Solutions Environmental Science Global Systems and Cycles Human Impacts History Mathematics Nature of Science Measurement Science as a Process Size and Scale Time Perception Light Color and Seeing Listening and Hearing Optical Illusions Scent Smell and Taste Tactile and Touch Physics Electricity and Magnetism Energy Heat and Temperature Light Mechanics Quantum Sound Waves Social Science Culture Language Psychology Sociology Keywords absorption acceleration acids adaptación adaptation aerodynamics afterimage alternative energy aluminum foil angle animal behavior antinode art atoms audio bacteria balance balloon basado en una exhibición bases battery bicycle wheel binocular vision biodiversity blood boiling botany boundary Boyle's Law brain bubbles buoyancy carbon carbon dioxide cause and effect caustics CD cell phone cells center of gravity center of mass charge chemical bonds circuit circulatory system climate change CMY color compass compost conductivity conservation of energy conservation of mass constant constante convection copper covid-19 current decomposition demonstration density density column design development diffraction diffusion dissection DNA double slit earth earthquakes eccentric eclipse eddy currents edible electrochemistry electrode electrolysis electromagnet electron electrostatics enzymes equilibrium español exhibit-based experiment exponential eye fault feedback fiber optics filters flower Flowers fluid fluid motion fluorescence fog food food coloring force Fraunhofer lines frequency friction friend Fruit gas gene geometry granular materials graph gravity heart heat heat transfer human impacts hydraulics ice illusion image imagen remanente immune system inertia infrared ink instrument interference internal energy ion KE kinetic energy lab activity laser learning LED lens Lenz's law lesson levitation light light scattering light-scattering liquid liquids luminescence magenta magic magnet magnetic field marshmallows mass matter membrane metabolism microorganism microscope milk mirror model molecules momentum moon motion motor MS-PS4-2 msas music natural selection nature nature of science Newton's laws node nucleus observation ocean ocean acidification ojo optical osmosis outdoors paper parabola parallel partner patrones patterns PE pendulum period persistence of vision perspective pH phase change photoelectric effect photon photosynthesis physics pi pigment pinhole pitch pixel plankton plant Plants plastic plate tectonics polarized light potential energy pressure prism probability properties proportions protein PS4.B random ratio reflections refraction reproduction resonance respiration retina RGB rotation salinity salt sand sea level rise seed seismology separations series shadows soap solubility solutions sound spaghetti spectrum spin spinning tops strain straw stress string structure and function sun surface area tape temperature thermal expansion tides tinkering tinsel tool torque total internal reflection toy trait transcription translation transmission transmitted transport turbulence vacuum variation velocity vibration video virus viscosity visualization voltage volume water water cycle wavelength waves weather work NGSS LS LS1 LS2 LS3 LS4 ESS ESS1 ESS2 ESS3 PS PS1 PS2 PS3 PS4 ETS ETS1 CCCs Patterns Cause and Effect Scale, Proportion, and Quantity Systems and System Models Energy And Matter Structure and Function Stability and Change EPCs EPC1 EPC2 EPC3 EPC4 EPC5Show resultsClear Displaying 1 - 6 of 6 Cosmic Coincidence Discover the “cosmic coincidence” that makes solar eclipses possible! Eclipse in a Cup Try a new tilt on eclipses. Eclipse to Scale Make a scale model of a total solar eclipse! Eclipses of the Ring Light A ring light stands in for the Sun. Solar Eclipses Use your thumb to eclipse your friend! Spot the Sun Safely view our nearest star.