This is my favorite science project! Disney’s Tomorrowland film originally sponsored this post – but in the years since this was originally published, it’s simply become a staple science experiment for my preschool class and a well-loved science project for science fairs. For the last seven years this simple question ” Which food will rot first?” has been a great way to get preschoolers excited about science and spark their curiosity. That is our goal when including science experiments in our classrooms.
Easy Science Project
Ready? This is so much fun, and I like that it takes days to progress and observe. This gives children a real sense of what being a scientist is like. It takes time to observe and gather info!
Gather your materials. You will need some food (we chose cheese, milk, bread, and an orange slice), something to observe them in, like these test tubes or regular sandwich bags will work, and an observation log. You can find plastic test tubes like the ones I have here – use my amazon affiliate link to buy. Download Here
Observe and make notes of the observations on your log for 5 days.
This is what ours looked like on day 1 and day 5. Even though you can see mold on the orange, the milk was nearly solid. As my kids found out, it was very sour. They were very into carefully inspecting and observing each day. One day my daughter shook the milk…don’t. Trust me. For the sake of science, though, we went for it.
The best part of this was how seriously they took their roles as scientists, and I loved making them realize that they don’t have to wait until they grow up to be a scientist, they can be a scientist today.
Need more simple science activities and science experiments for young children?
Check out our tried and true science experiments – these all make great science projects for science fair too! Read the full list here.