page type Click a topic link to see more.
Making a Scale Model of the Solar System video, free, ClosedCaptions sun, earth, model, planet, solar system
Making Craters video planet, moon, solar system
Solar Power video sun, thermal energy, light, electricity, energy
Global Science video, free, ClosedCaptions sun, earth, seasons, cycles, model, moon, misconceptions
Launch of the Space Shuttle Discovery video earth, engineering, moon, information processing, solar system
Making a Compass video earth, properties, engineering, magnetism, structure and function
The Difference Between Weight and Mass video mass, earth, inertia, model, properties, moon, gravity, misconceptions, solar system, measurement, force and interactions, matter
Planets and Pennies video, ClosedCaptions mass, sun, earth, model, planet, moon, gravity, solar system, measurement
75% Water video food web, critical thinking, earth, ecosystem, model, water cycle, information processing, tectonics, water
Finding Your Way video sun, earth, cycles, information processing, measurement
How Far is That Planet? text page, free planet, moon, solar system, measurement
A Compass at the South Pole text page critical thinking, earth, model, magnetism, attract/repel, hypothesis, theory, and law
Eclipse Watching text page, free electromagnetic spectrum, senses, sun, light, moon, solar system, safety, waves
Twinkle, Twinkle, Distant Star text page star, refraction, planet, light, solar system
Why is a Full Moon So Bright? text page, free cycles, model, reflection, light, moon
924Trees with yellow leaves photo challenge adaptation, critical thinking, earth, observation, plant parts, climate, weather, plants, evolution
524 photo challenge moon, misconceptions, solar system
466 photo challenge atmosphere, sun, observation, refraction, density, light, waves
384 photo challenge sun, critical thinking, observation, light, moon, solar system, waves
322 photo challenge reflection, light, moon
296 photo challenge earth, moon, solar system
278 photo challenge star, atoms, periodic table, nuclear, element, rocks