ALT An image of three students wearing white lab coats and pink safety goggles. On the right it says "Safety first... always" in yellow text, with a yellow button that says "Get Started" in black text.

ALT Free Resource. A dark blue background with white text. On the right is a circular picture of an atom.

ALT Flinn Fact. Our mission is to support science educators and make a positive impact on student achievement in the science classroom. A dark blue background with white text. On the right is a gray border with a blue atom pattern.

ALT Old Foamey. A dark blue background with white text. On the right is a picture of the product, which shows blue foam erupting from a container.

ALT You want to place a piece of glass tubing into a rubber stopper after the tubing has been fire polished and cooled. This is best done by: A. lubricating the tubing with water or glycerin. B. using a towel or cotton gloves for protection. C. twisting the tubing and stopper carefully. D. all of the above. The top half of the image is green, and the bottom half is dark blue. The text is white.

ALT Elements spelling out "Brains." Hungry for Science. A green background with dark blue text. On the right is graphic of a zombie.

ALT 360Science™: Build a Spectroscope from Household Materials. A dark blue background with white text. On the right is a picture of the kit, which contain cardboard rolls, tape, and pliers with a laptop in the background.

ALT Free Resource. On the left is a dark blue circle with white text, and on the right is a circular picture of a bunch of floating soap bubbles.

ALT Free Resource. A dark blue background. On the left is a blue circle with white text, and on the right is a circle containing a picture of a light brown frog.

ALT A dark green background. On the left is green background with white text that says "Free Resource." On the right is a circular picture of a broken egg.

ALT Free Activity. Rainbow Glasses. A green background with white text. On the right is a circular picture of rainbow light diffraction.

ALT Free Resource. A dark green background with white text in a green circle on the left, and a preview of the demonstration, which features blue stalactites and stalagmites, on the right.

ALT Roller Coasters—Flinn STEM Design Challenge. A dark blue background with white text. On the right is a picture of the product, which contains pipes bent to resemble a rollercoaster.

ALT 150,000+ Science Educators. A green background with white text, and a border containing a pattern of science-related graphics.