The Ketchup Experiment! Kid friendly site with lots of neat experiments! It has one that makes a rocket out of a film canister, which would be good for an grade space unit, but it has to many kid friendly expiriments. Great site for any science teacher.
A Multi-Sensory Experiment with Jell-O & Vinegar
Some messy science fun for screen-free week -- A Multi-Sensory Experiment with Jell-O and Vinegar
Snake bubbles: -an empty bottle (I used a Gatorade bottle) -rubber band -terry cloth (I used a wash cloth) -liquid dish soap -water Mix the dish soap with some water, I did a 2 to 1 ratio soap to 1 water).
The Hippie Housewife Homeschools: Underwater Fireworks. Great science experiment for little kids to work on observation skills, and for slightly older kids to learn about relative density and miscibility
The Rubber Egg! A fun and super simple Science Experiment with only 1 ingredient! How Wee Learn
Dancing raisins activities. Lots of fun experiments. I have done this experiment, and seen the entire class become silent out of curiosity. It is a great engagement piece for a lesson, and it can be hands on if you ask for volunteers!
Elephant Toothpaste - cup hydrogen peroxide liquid is a solution, which can be found at a beauty supply store or hair salon), 1 Tbs (one packet) of dry yeast, 3 Tbs of warm water, liquid dish washing soap and food coloring
Love kitchen science experiments with materials you already have in the pantry. These simple science activities all use salt plus one or two other ingredients. Kids not only learn salt attributes, but also scientific thinking, process, and methodology.
Back to School - A Less Scary Second Grade Common Core