Pre-K Science Experiments

Below is a description of the some of the experiments we have done in Pre-K! 

In the first experiment we made Elephant Toothpaste  during Zoo Week. The students helped mix Hydrogen peroxide, dry yeast, dish soap, and warm water and observed what happened next. The reaction of all of the ingredients caused the elephant toothpaste to "grow." The students used their senses to describe what they heard, saw, smelled, and felt. 

In the second picture the students created the Salt Water Egg Experiment by experimenting with salt water and normal water by predicting if the egg will float in the salt water or regular sink water. We charted their predictions on a bar graph and then did the experiment. Our results showed that the egg floated in salt water and sunk in normal water. We then introduced the term buoyancy and discussed what it meant. 

The third picture is our Mentos and Diet Coke Geyser experiment. The teachers added the Mentos to the Diet Coke so that the students could observe what happened when the two ingredients were mixed together. The students were amazed to see how high the geyser was! We discussed how the bubbles, the carbonation, in the diet coke mixed with the Mentos candy made a huge explosion. 

In the last picture we created a Pumpkin-cano a.k.a an erupting pumpkin by mixing the following ingredients: baking soda, vinegar, dish soap, and warm water. We took turns taking the seeds and guts out of the pumpkin and describing what they felt like! Then we added all of the ingredients inside the pumpkin and observed what happened next. The students touched the foam and noticed that the foam was warm. We then discussed then the ingredient reacted to each other and caused the foam to become warm because of the type of reaction it is. 

My students love participating in science experiments, what experiments have you done with your students?