1) Trapped gas experiment: This experiment provides an elementury and fun way to engage kids in learning about chemical compounds, and the creation of trapped pressure. i.e. What goes in must come out:-0) Provide children with a standard sized water bottle. Have the children drop six tablespoons of baking soda in the bottle. Provide each child with a balloon. Make sure the balloon has a good sized neck as the children will need to spread the neck of the balloon securely over the water bottle to trap the pressure.
I normally allow the children to insert the baking soda into the bottle independently. It gives them a sense of self empowerment and engagement in the experiment. I than encourage the child to hold the balloon in their hand while I insert baking soda into the bottle for them. My rationale is that the chemical reaction occurs rather quickly and if the child already has the balloon in their hand they will be capable of sealing it over the mouth of the water bottle rather quickly. Young kids will most likely lack the dexterity to pour the baking soda and seal the bottle with the balloon quickly enough. Hence, we do it as a team so they still feel independently involved.
Now for the fun part. When the balloon is sealed over the perfectly safe and nontoxic chemical mixture, the pressure will have no where to go but up:-00 Thus, the balloon that is sealed to the water bottle will inflate as if by magic!!!
This activity is an all time favorite learning experience, from the smallest kids to the eldest. The hands on component and seemingly magical quality keeps kids happily engaged in the activity.
2)Magnetism exploration: Have the children create a race track with posterboard and markers.
Tape a paper clip to the bottom of a small toy car. Provide the children with various size magnets and magnetic wands. Wave the magnets over the toy car to move them across the track.
For comparison, remove the paper clips and have the children wave their magnets across the toy car again.
This will create a springboard for a comparison and contrast discussion.i.e. Why did the cars move within the set we taped paper clips underneath of, and vica versa.
3)Weights and measures: Provide the children with objects of varying sizes and weights. Allow them to drop objects into a bucket of water. Ask the children if their object floated or sunk in the water. This is an excellent segway into a conversation and exploration into weights and measures. Perhaps children could weigh their objects before dropping them into the bucket of water to reinforce the idea that heavier items like a spoon will sink in the water, before light objects like a balloon.
4)Smelly Volcanoes: Provide the children with modeling clay after reading a picture book on volcanoes. The book will layer and reinforce concepts the children will apply in this activity. Encourage the children to create a volcanoe out of the modeling clay to provide a container for their eruption.
I am sure we all remember creating a volcanic eruption in a homade volcanoe by mixing baking soda and vinegar together in grade school.
We are going to add a little pizazz to an age old experiment that has been popular throughout time. Have each child add five tablespoons of baking soda to their volcanoe. NOW HERE IS THE FUN PART. Add several spoonfuls of red koolaid to the baking soda, than have the kids pour in the vinegar. The end result is a bubbly eruption that is the color red to simulate a real volcanic eruption. It will have a cherry oder as a result of the Koolaid.
As you can see, I attempt to encourage children to be as independently involved in their project as is possible. We must remember it is their project and learning experience, not ours. Yes, there will be spills and mess. However, that is merely a sighn of a hands on learning environment where children feel safe to explore. And Isn’t exploration the very thing that will shape our future thinkers and leaders of the world?
Mar N. M.Ed., CECE