STEM learning can happen anywhere.
Can you extract DNA from a strawberry...? YES!
Try our STEM2home activity to find out how!

This week, LET'S GO is all about genetics as we recognize National DNA Day (April 25).
We want to see what you did! 
Share a picture or video of the activity with us to be entered into a drawing for a family-friendly STEM game (contact-less delivery, of course)! See Instructions below.

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STEM2home Activity
DNA Extraction
Time : 10 minutes

What you'll need : 1 strawberry, ¼-tsp salt, 2 tsp dish soap, 6 Tbsp water, isopropyl alcohol, plastic bag, cup, spoon, tweezers or a toothpick, strainer or a paper towel, bowl

Instructions :
1.      Put a bottle of isopropyl alcohol in a freezer. We’ll come back to it later. Measure 6 Tbs of water into a small glass container.
2.      Add 2 tsp dish soap to the water.
3.      Stir in a ¼-tsp salt and mix until the salt dissolves. This is the extraction mixture .
4.      Place one strawberry into a plastic zipper-lock bag. (You may want to remove the green leaves first!)
5.      Pour the extraction mixture into the bag with the strawberry.
6.      Remove as much air from the bag as possible and seal it closed.
7.      Use your hands and fingers to mash, smash, and moosh the strawberry inside of the bag. You don’t want any large pieces remaining.
8.      Pour the resulting strawberry pulp and extraction mixture through a strainer and into a small glass bowl or similar container. (You can pour it through a paper towel if you don’t have a strainer!)
9.      Use a spoon to press the mashed bits of strawberry against the strainer forcing even more of the mixture into the container. If you’re using a paper towel, remember to press gently!
10.   Add 1 tsp of the chilled isopropyl alcohol to the solution and hold the mixture at eye level. You’re looking for a separation of material that shows up as a white layer on top. That’s the DNA of the strawberry!
11.   Use the tweezers, a toothpick, or a cotton swab to gently remove the DNA from the solution and lay it on a dish to examine.
Image courtesy of Wonder How To. Video courtesy of Spangler Science.
STEM2home Drawing
We're kicking off STEM2Home with a
chance to win a family STEM game or activity!
Follow these simple steps:
  1. Try the STEM activity above
  2. Take a picture of you and your family doing the STEM activity.*
  3. Share the picture on social media with the hashtag #STEM2home and tag us (@LetsGoBoysAndGirls) or reply to this email (

Deadline is 05/01/20. The winner will be randomly selected and notified by 05/04/20.
*Photos must be approved to share by legal guardian.
STEM2home Career Connection
Geneticists study genes from plants, animals, and humans to determine how genes interact with each other, evolve, and duplicate.
"I saw science as a way to be able to figure out a puzzle. My love of mystery is something I bring into my daily work."
-- Erika Thompson, geneticist
Video and image courtesy of Career Girls.
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