Dancing Candy Hearts

Have you ever opened a fresh bottle of carbonated water or soda, poured a glass of it, and just watched as the bubbles fizzed upward in the glass? Have you ever wondered what those bubbles are? They're made of carbon dioxide gas, which was packed tight in the soda before you opened the bottle. Not only can that carbon dioxide gas give you a fizzy drink to enjoy, but it can also give you a show. How? By making candy conversation hearts "dance!" Along the way you will discover some of the fun… Read more

Put Valentine's Day-themed candies to use in science class with one of these fun hands-on STEM activities. Conversation hearts, candies, and a robot that delivers! It is easy to give a Valentine's Day spin to hands-on science and engineering activities with students. Candies in Valentine's Day colors work well for a range of science projects, and many engineering projects can be recast for Valentine's Day by making colored papers, tape, and craft… Read more

Give student science and engineering activities a fun Valentine's Day-inspired twist with these 11 free STEM ideas. Be My STEM Valentine With a bit of creative thinking, it's easy to give favorite STEM activities a new spin and irresistible Valentine's Day flair. See our suggestions below for an assortment of science and engineering activities that can be done with Valentine's Day in mind. From Valentine's Day cards written in invisible ink to a… Read more

Use these free science lessons, experiments, and activities to teach K-12 students about density. Sometimes students wrongly think that an object's density is the same as its weight or its mass. Instead, density refers to an object's mass in a given volume. Two objects that have the same shape and size (volume) but have a different mass (like two same-sized balls with different weights) have different densities. As a physical property of… Read more