I have used Steve Spangler’s Science website for several years. On the website, you can find simple science experiments that you can investigate with your class. Each experiment has an image, a list of material, a short instruction section and some even have videos. Below is an example called ‘Dancing Spaghetti’.
Searching is made easy through the use of a category section. I’ve used ‘Elephant’s toothpaste’, ‘Exploding Sandwich’ and ‘Colour Changing Milk’ with my class previously (just to name a few). There are also several experiments that you can do with Mentos. Do you remember the diet coke and Mentos experiment that was filmed years 6 ago?
Another great resource is The Science House Foundation which is an organisation that provides free science resources for educational purposes. They have on online bank of videos showing a range of scientific experiments ranging from ‘Green Plastic’ to ‘3D Modelling’. Even if you don’t intend to conduct the experiments with your class, students are amazed just by watching.