eggs & the law of gravity

My kids are in a homeschool co-op like thing…it isn’t really a co-op, but I don’t know how to describe it. Anyway, we meet once a week and the kids give a presentation each week. This was the third week of presentations that involved demonstrating things. 4 kids x 3 weeks = 12 demonstrative presentations. FireCracker has demonstrated how to brush her doll’s hair, how to make a lego plane, how to color a rainbow and I forgot the other one. The boys have done a variety of stuff too.

We were out of ideas this week.

Google to the rescue.

The oldest two boys did a little law of gravity presentation. My 5 year old son demonstrated how to make a sandwich ~ so I didn’t have to pack his lunch. Genius idea he copied and I let him.

So the egg thing is a simple idea and very easy to do. Use a cup of water as the base, next top with a flat plate/tray, then a toilet paper roll, then an egg. We used raw because it was more exciting to the boys. Make sure the tube is lined up over the center of the cup. Give the tray a swift hit. Motion is transferred to the plate, inertia comes into play, the egg ‘freezes’ in the air then falls into the cup.

My oldest son used two cups and two eggs at the same time for his presentation. It was kind of awesome.

The chickens gathered around wondering what we were doing with their eggs. Not their babies…we don’t have a rooster so the eggs aren’t fertilized and can never turn into chickens. Did you know that? Crazy….


He wants to do this egg ‘trick’ all the time. When he asked to do it this time I told him ‘yes’, if he would let me photograph him. Bribed him. No matter how hard I tried though, I couldn’t get a normal smile from him. These are more him anyway.



Photo Tip: Outside we had great overhead clouds blocking the sun. The clouds were a big reason I wanted to get some pictures of him (or any of my kids that would agree to it!). These shots were all taken with my 50mm lens at ISO 100, 1/1250, and f/2.8 when the clouds were blocking the sun. However, when the sun peeked out from the clouds the lighting completely changed. My settings for the shot below (right) were ISO 100, 1/4000, f/2.8. These were taken in the middle of the afternoon, so without the clouds the light was really harsh. When you have great clouds covering the sun, but its still bright light outside – it is a good time to take advantage of the light without worrying about shadows. I love bright cloudy days!


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  • Sarah - We’re in the same co-op thingy in another city and I never know how to describe it to people either! Love your presentation ideas–will have to borrow them πŸ™‚

  • Leila - Great pictures, of course!
    I did know that about eggs, but, astonishingly, I met a man *selling* organic eggs at a farmer’s market who did NOT know the difference between a fertilized and unfertilized egg, or what made them so.
    Maybe he needed some homeschooling?? πŸ™‚

  • Amber - We call our group thingie “homeschool play group”. I don’t think everyone in the group calls it that but I started when my daughter was really young as a way to explain what we are doing and it stuck at our house. Someone told my daughter, “Oh you’ll be going to kindergarten next year.” She said, “no I’m not I’m homeschooled!” Ha! Super cute. Not as cute as those faces up there… Love them so funny!

  • Crystal Prychidko - That is so cool!!! We are going to try this!! My son will love it! Thanks for sharing!!! Great lesson too πŸ™‚

  • Tracy dickinson - Classical conversations? We homeschool in tulsa also and are looking for some type of group to be a part of. Heard a speaker discuss cc yesterday. Seems very interesting!

  • susie - One nice thing about having no rooster is that you will not accidently crack open an egg with a chick in it! It happened to me and it is so gross! Fun experiment, I will have to let my boys do this one!

  • Heidi Bortel - I love your chicken coop!:)

  • Jamie - Always love photo tips!

  • Sarah - We are new to CC this year and loving it. The ease and confidence with which these kiddos give their weekly presentations is amazing. We’ll be googling for topics soon, I’m sure πŸ™‚

  • Kassondra - thank you for the photography tip about the clouds! I will definitely have my kids try this trick. also trying my hardest to talk me husband into let me get some chickens next year. I just seems like such a awesome way to teach your family about responsibility, where food comes from and just a great bonding experience!

  • Susan - Now I will be doing the Nature studies and hope there is something about chickens in there – because I did not know this. Not a country girl, grew up in the suburbs and my mom always bought eggs at the supermarket, as well as I did. One time when I was 11 years old (long time ago) a friend gave my mom 2 dozen eggs from the farm. I was so grossed out and told her I am not eating eggs anymore, when I asked “what that blackish gunk was on the eggs”, and she told me.

    So, I guess I better get myself and kids to a local farm and find out about this ‘fertilizing’ by the rooster. Believe it or not, never heard that growing up and never paid attention in science. (shame on me).

    But I do like your post. Will follow along, now that I was led here from another blog.


  • Lynnette - This experiment saved my morning! Thank you for sharing it. Though our egg got beaten up in the process it was still lots of fun and the kids enjoyed it.

  • Lexi - Are you doing Classical Conversations? Unfortunately, we don’t have a group that meets near our home (closest is an hour away and it was full), but we are learning a ton together. My son is in 2nd grade. LOVE how the history is intertwined with Biblical history. Love hearing my son sing about the Magna Carta as he is playing Legos.

  • Eva - Thank you!! My 5 year old son is off poorly from school today, so this was the perfect thing to brighten up his afternoon xx

  • Kiera Chambers - LOVE this and so will my kids!

  • Kiera Chambers - SHOCKED that so many of you didn’t realize an egg {or actually a hen} needs a roster for fertilization…it takes two baby!!! I did grow up on a farm with chickens so maybe it was just farm 101…
    Maybe it’s one of those things that if you have just never thought about it you haven’t put two and two together….

    tip for if you ever do get a rooster…
    always, always, always crack eggs into another container before adding the egg to your recipe or whatever…that way you don’t accidentally crack a fertilized, partially developed chick into your cookie dough {worst.cookie.dough.EVER}!

  • Stoich91 - Just found this Ytube channel and it reminded me of you and your kids! πŸ˜€ There are some fun activities, here, like that one!

  • Anna - Take this further and talk about Newton’s first law (things at rest tend to stay at rest, things in motion tend to stay in motion unless acted on by an external force). Then set up a tea party set with a table cloth underneath it and have them try to pull the table cloth out from under the dishes quickly enough so that the dishes stay in place. Then talk about how it’s the same concept. It’s the same reason we need seat belts in cars, even though the car stops, we want to keep moving. Newton ROCKS! Inertia ROCKS!
    Thanks for the egg trick idea πŸ™‚

    Anna, a mommy and a science teacher

  • Bird - What special thong home shooling is… I think it is forbidden in Germany, but I really dothink it has a lot of good things! Even when you have more than 2 kids… you can spent more time together, enjoy the love and happiness about having siblings… ect.

    Hope you can do this a little more with your kids!
    right now love from Granada and the fatcatconnection

  • Naomi - It sound like you are in CC, which is what I do with my kids, but it sounds like you do waaay more demonstrations that we do! I only have two kids and I can barely manage to get them through one week of demos.

  • Abigail Carpenter - My kids have blossomed beautifully in their presentations for our ‘homeschool co-op like thing’ πŸ˜‰ It took my girl 5 weeks to transition from tears to confidence. BTW, amazing pictures, demonstration and information. Love reading your blog.

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