Explore our collection of science articles.
Explore properties of matter with free interactive activities, hands-on experiments, and a printable worksheet. Preview our complete 7-day lesson plan for 4th-5th grade.
Discover how gravity changes on every planet in our solar system — and play Planet Hopper to feel it for yourself!
Explore the Sun, planets, asteroids, and comets with free interactive activities, hands-on experiments, and printable worksheets. Preview our complete 7-day interactive lesson plan for 3rd-5th grade.
Explore 6 body systems with free interactive activities, hands-on experiments, and printable worksheets for grades 4-5. Includes a free digital lesson preview.
Teach electrical circuits with our free interactive circuit builder! Kids drag and drop batteries, bulbs, and wires to build working circuits through 8 progressive challenges. Perfect for 3rd-5th grade.
Explore light, sound, and heat energy with free activities, hands-on experiments, and a printable worksheet. Preview our complete 5-day interactive lesson plan for 1st-2nd grade.
Teach the butterfly life cycle with our free 5-day interactive lesson! Includes drag-and-drop activities, hands-on experiments, printable worksheets, and vocabulary flashcards for 2nd-3rd grade.
Explore the plant life cycle with free interactive activities, hands-on experiments, and a printable worksheet. Preview our complete 5-day lesson plan for 2nd-3rd grade.
With just hot water, sugar or salt, and a little patience, you can grow your own sparkling crystals! Learn about supersaturation and crystal structures.
Create your own real cloud using warm water, ice, and hairspray! Learn how real clouds form in the sky through condensation and tiny particles called nuclei.
With just a battery, a magnet, and some wire, you can build a real spinning motor! Learn how electricity and magnetism team up to create motion.
Almost every substance sinks when it freezes. But water does the OPPOSITE — and that weird quirk is the reason life on Earth exists!
What invisible force lets a magnet stick to your fridge or repel another magnet? It all comes down to electrons spinning inside atoms — like billions of tiny magnets working together!
An arch is one of the strongest shapes in engineering. Find out how it transforms crushing downward force into sideways push — and why the Romans used arches everywhere!
Red, blue, green, gold — each firework color comes from a different metal burning inside! It's the same science that makes flame tests work in chemistry class.
Soap molecules are like tiny superheroes with a split personality — one end loves water and the other loves oil. Together, they capture dirt and wash it away!
Drop a Mentos into Diet Coke and WHOOSH — a geyser shoots sky high! But it's not a chemical reaction like you might think. The real reason is even cooler!
Earth's surface is cracked into giant puzzle pieces that move around. When they collide or pull apart, hot melted rock erupts — and that's a volcano!
No tides, crazy weather, shorter days, and wobbly seasons — life without the Moon would be VERY different. Here's what would change!
The sky isn't really painted blue — it's a trick of light! Find out how tiny air molecules scatter sunlight and create the colors we see.
It's a plant that EATS bugs! But how does a Venus flytrap snap shut so fast without muscles or a brain? The science is incredible!
A caterpillar turns into complete goo inside its cocoon — so how can a butterfly remember things from its caterpillar life? The answer will blow your mind!
Ever wonder why trees turn red, orange, and yellow in autumn? The answer involves hidden pigments and a tree's clever survival trick!