We actually did this lesson last night right after our “What is Life” lesson, but my posts are so full of photos, I like to break things up a bit.
I love learning along with my daughter, and this lesson was no exception! We learned about cells, parts of a cell, and the difference between animal and plant cells. For our lab activity, we used a chicken egg. Since I’m on-off vegan, I had to get eggs from the store for this, but at least they were cage-free, organic, high Omega-3 eggs. In this picture you might even be able to see the tiny holes egg shells have to let air and water in (click image).
Satori filled out the lab worksheet on parts of the egg as we carefully examined our own egg.
The entire family learned more about the egg. David used to think the yellow-orange yolk was the baby chicken itself, which might explain why he doesn’t like to eat eggs, being we are vegetarian. But the yolk is the food for the embryo before it is hatched. We learned what all those funny little parts are that are attached to the yolk (chalaza). We saw the blastodisc inside the yolk. Satori knows a tiny bit about eggs from our quick unit study on the human body and she kept wanting to draw a sperm entering this egg. That entry point would be the blastodisc.
Anyway, the yolk and blastodisc is one entire single cell that we can see without an expensive microscope!
Satori completed her worksheet, labeled the major parts of the egg and colored it in.
Here’s more helpful resources on learning about Eggs!
Enchanted Learning – Egg and Embryo Development


















