This week my friend and I did such a cool science experiment with our children!! We are using the Real Science 4 Kids program and the last chapter is DNA. So for the last two weeks we have been working with the children on understanding polymers, DNA, and genetics. We decided to veered from the experiments in the book and do a few different ones. 2 weeks ago we had the kids build polymers using tooth picks, gum drops and marshmallows. We also built DNA and RNA strand with K'nex and explained genetics.
We used cake decorating pens to label the marshmallows
Kids had fun assembling various molecules
Then the best part-- they could eat them:)
Building DNA with K'nex
Making a double Helix
Next the kids made edible DNA strands. Again we had the children label the bases with cake writing pens. Explaining only certain bases can link up with other bases.
They kids had fun playing with them and then they ate them. Class is always better when you can eat what you just created.
This week we found a fun video explaining how to extracting DNA from strawberries. We decided to give it a try and had wonderful results. First the kids watched a video on YouTube.
Next we got out our supplies and tried to replicate the results...it was pretty neat to see.
Need strawberries and a plastic bag
Add a teaspoon or so of water and mushed up the strawberries.
Carefully pour only the liquid of the strawberries into a test tube. Try to avoid clumps of strawberries. Parent help was required for this.
Add 1/4 teaspoon of dish washing soap. Stir it up with a wooden skewer.
Very carefully add ice cold rubbing alcohol to the test tube. You want the alcohol to remain on top of the strawberry juice.
Now just watch and see something amazing happen in just minutes.
We have DNA. The little white strands are what you are looking for.
Looking at the test tube about an hour later.
How cool was that:)!!! The kids really had fun. I must admit I was quite impressed myself.