Lesson 10 of Apologia's Exploring Creation with Zoology 2: Swimming Creatures of the Fifth Day is all about "Cephalopods," creatures that include the octopus, squid, the nautilus, and the cuttlefish. Maggie really enjoyed learning about the funny critters in this lesson.
With every lesson in our text, we use the Junior Zoology 2 Notebooking Journal to record all that we learn.
Cephalopods are amazing animals. They are incredibly intelligent and have incredible defenses, including camouflage, jet propulsion, and the ability to expel ink! We learned a lot from this lesson. (I had no idea that the cuttlebones you see in bird cages are actually from a cuttlefish.) I think Maggie was most intrigued by the squid.
Learning about how optopuses express their emotions in color was something Maggie found hilarious. I enjoyed learning about their complex eyes.
After some journaling in our notebook, we watched a quick YouTube video on the intelligence of octopuses at https://www.youtube.com/watch?v=VLkKiVIBxXU (below).
I put together this "Video Review" sheet for her to complete after she watched it.
We put the completed sheet in her notebook, too.
I love all the activities in these Apologia notebooks to apply their learning from the text. We add applicable stickers to our pages to add some color. The stickers above and below (of the octopus and the chiton) I had ordered in a book called Sea Life Stickers by Valerie Kells from Dover (http://store.doverpublications.com/).
We watched a second video on cuttlefish at https://www.youtube.com/watch?v=lcwfTOg5rnc (below). It is a GREAT video for this lesson. Maggie loved it.
Just like with the octopus video, I had her fill out a worksheet to review the film.
The text challenged us to complete a simple experiment to demonstrate buoyancy and how cephalopods rise and fall in water. For the same, we used a large, clear, plastic bottle, an eyedropper, a pipe cleaner, a googly eye, glue, and water. First, we decorated our eyedropper with the pipe cleaner and googly eye to resemble a cephalopod.
Once we balanced the water level in the eyedropper outside the bottle, we put our cephalopod in the bottle full of water (its "habitat") and closed the bottle tightly with its lid. When we squeezed the bottle, water filled the dropper and it began to sink. When we released the bottle, water exited the dropper and our cephalopod floated at the top. Some cephalopods (like the nautilus) can control their buoyancy in the same way. The can take in water to become heavier, making them sink, or expel water to become lighter, making them rise. Cool.
We recorded the results of our experiment in our journal.
Finally, it was time to add cephalopods to our ocean box! Maggie worked on the squid (her favorite cephalopod).
I think she did a fantastic job!
Daddy made her octopus.
They fit right in!
When we visited The Estuarium at the Dauphin Island Sea Lab last month, Mags picked out an octopus in the gift shop. I think during this lesson, she snuggled with it more than she had before this study.
And at our field trip to the Georgia Aquarium in Atlanta a few weeks ago, Mags picked out a squid. (Of course.)
Next up? Echinoderms!