Elementary Science

30 01 2008

Ice Cream. Giant Bubbles. Mirrors. Vinegar. Boat Racing.

Last night J’s school had a Family Science Night for K-2nd graders and their families. It was a blast! They had stations set up around the gym and we moved from station to station trying our hand at scientific experiments. J’s favorite were the bubbles– Giant Bubbles! (He did it 4 times– who needs Disney World?– ok, we do but only every other year…)

There were a lot of people and noise… smells… J did really well! I think the key was that we followed his lead.  We went to the stations he wanted to go to and didn’t push him to do things that he didn’t want to do. He wanted to do about half of the stations and we left about an hour into the program.  His two favorite guys weren’t there but a friend from pre-school was so we hung out with him for a while.

The bubbles were the big hit for our family! They used a baby pool, milk crate and hoola hoop to pull bubbles up around the children as they stood in the middle. It took two people to pull the hoop up evenly so, if you’re going to try this plan on having a little extra help.

Big Bubble

The school provided a book with lots of recipes and experiments– here’s the bubble recipe:

Majic’s Big Bubble Recipe (from Jamico website)

Fills a gallon milk jug

11 Cups of Water

4 Cups Ajax dish soap (antibacterial works best)

1 Cup corn syrup

The other popular experiment:

Ice Cream in a Bag

1 Gallon Ziploc type bag

1 heavy duty Quart Ziploc type bag

4 cups of ice

1/4 cup of salt– rock works really well–

1 cup whole milk

1 tsp vanilla extract (any flavor will work)

2 tbs sugar

Pour milk, vanilla and sugar into quart Ziploc. (You can add fruit, chocolate etc. also)Squeeze as much air out as you can and seal the bag carefully– you might even use duct tape to make sure it’ll stay good and closed.

Put the filled quart bag into the gallon bag and pour in the salt and ice. Seal the bag and shake, toss, flip it around for 5 to 10 minutes. You might want to wear gloves so your hands don’t get too cold.

Don’t open the bags until you commit to being done with the process– it might be really hard to re-close because of the salt getting into the zipper grooves. You can check it by squishing it around — easier to do if you squeeze out some of the air in the gallon bag as you close it.

YUM!!

Science Explanation— The salt lowers the freezing point of the water which allows it to get colder than ice (about 28 degrees). This super-cold water and ice mixture causes the liquid milk mixture to freeze and become solid.

There are a lot of great science experiments you can try at home– watch out for smells with smell-sensitive children! (J hated the smell station!)

Try these websites for more fun science experiment ideas:

http://www.funology.com/laboratory/index.htm

http://members.ozemail.com.au/~macinnis@ozemail.com.au/scifun/miniexp.htm

 

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30 01 2008
Disney » Blog Archive » Elementary Science

[…] hfamom wrote an interesting post today on Elementary ScienceHere’s a quick excerpt(He did it 4 times– who needs Disney World?– ok, we do but only every other year…) There were a lot of people and noise… smells… J did really well! I think the key was that we followed his lead. We went to the stations he wanted to go … […]

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