Beginner Plants and Living Things
Discover what makes something alive, how seeds grow into plants, and what plants need to…
Browse by Grade
Choose your grade band, then pick any course. Plants and Living Things (grades K–2) is free.
Grades K–2
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Grades 3–5
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Intermediate The Amazing Human Body
Tour your skeleton, muscles, heart, lungs, brain and senses, and learn how healthy habits keep…
Intermediate Space and the Solar System
Blast off to explore the Sun, Moon, eight planets, stars and constellations, and how astronauts…
Intermediate Forces and Motion
Push, pull, roll and launch: explore gravity, friction, magnets, speed and simple machines with hands-on…
Intermediate Safe Science Experiments
Think like a scientist: ask questions, make fair tests and run safe kitchen-table experiments with…
Grades 6–8
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Advanced Matter and Chemistry
Atoms, elements, the periodic table, states of matter, physical and chemical changes, and how chemists…
Advanced Energy, Light and Sound
Kinetic and potential energy, heat transfer, waves, reflection and refraction, color and the science of…
Advanced Electricity and Magnetism
Static charge, circuits, voltage, current and resistance, electromagnets, motors and generators, and electrical safety.