►This site was originally created for my kids and their cousins, because we did science together. We eventually added more friends and I ended up having science classes for five years. I am no longer adding to the site (since 2014), but will leave it up for others' use. I do post to facebook occasionally if I come across something to share. =)

►Please accept my apology for any broken links or videos that do not work. I am always disappointed when people take down their videos from YouTube. It makes it hard to find just the right replacement. And because the videos were posted years ago, I usually have no recollection of what the video was about.
I kept thinking I would have time after my kids graduated, but life has filled up my free time with new responsibilities. =)

►Please do not email, asking me to post your website link, or to review something to put on my site. Any resources posted on this site are things I had found on my own during my regular searching for material I needed at the time, and liked it well enough to post here. There have never been any affiliates on my site, and as it is no longer active, would not be worthwhile at this point. ;)
Thank you!

How many molecules in a drop of water???

I emailed Apologia and asked them approximately how many molecules of water would be in a drop on the end of one's finger.

Their reply:
"An average size drop of water has about 0.05 ml, and a drop of that size would have 1.7x10^21 molecules."

That's 1,700,000,000,000,000,000,000!

God's creation is AMAZING!!!

Amazing 9-Layer Density Tower!

Amazing!  We did something similar in General Science Module 1, but this is fantastic.  And way prettier.  =)

Source of pic, with instructions and explanation
Used with permission from Steve Spangler

Video demo of how to do this experiment.

Steve Spangler is on facebook

Water Molecules!

While searching for videos for Physical Science Module 5 today, I came across these that go great with Module 4!
Embedding into a website is disabled, so you will have to click these links to watch them.
They have also been added to the Physical Science Module 4 post.

• Water Molecules - part 1 is a great video animation that shows that water molecules are polar, and will hydrogen bond.  Hydrogen bonding is what enables water (H2O) to stay in a liquid form at room temperature (instead of a gas like other H2__ substances).

• Water Molecules - part 2 shows the state of water molecules in liquid form, as a solid, and as a gas.

Basically atoms and elements are the same thing. 
An atom is just the smallest amount of an element.
Read this ice cream analogy.