Science for kids doesn’t need special equipment or a PhD. Easy, at-home science experiments can be done right in your own kitchen (or yard) and usually with ingredients you already have at home or can easily get. We’ve rounded up 24 classic concoctions, perfect for your curious crew. So get ready to make lightning, grow crystals and make slime. Plus, we’ve rated each experiment from one to five sponges so you know the messiness factor ahead of time. Click through the gallery to get cooking!

Make Elephant Toothpaste

A lesson in: chemistry and the exothermic process.
If you’ve ever wondered how elephants keep their tusks clean, we’ve got the answer. They use elephant toothpaste! Find out how to mix your own and figure out the science behind this dynamic exothermic (heat releasing) reaction from Asia Citro at Fun at Home With Kids. Our favorite part? That you get to throw in some sensory playtime after the action’s over.

Messiness Factor: three sponges

photo: Fun at Home With Kids

Want more at-home science experiments? We’ve got glow-in-the-dark science and gross-but-cool science perfect for your home lab! Tell us about your home science fun in the comments below. 

— Christal Yuen & Amber Guetebier