Archive for the ‘Science’ Category

Plate Tectonics and Earthquakes

Monday, February 10th, 2014

plate-tectonics-and-earthquakesThis article contains an affiliate link.

When my kids studied plate tectonics and earthquakes, we did some super fun hands-on activities. We are continuing our study of Earth and Space by Bright Ideas Press, and the highlight of this unit was to shake a Lego city to see what would happen during an earthquake. My kids kept setting up cities and shaking them down all week long.

tectonic-plates-2I’ve actually lived through many earthquakes. I grew up as a missionary kid in Guatemala, and I survived the 1976 earthquake, which was a 7.6 on the Richter scale. I remember the demolished city, where I could see inside the houses with knocked-down walls. It was kind of surreal. I tell you about it in the video. I also show you the hands-on activities we did for this unit:

The children looked up a list of cities where large earthquakes have happened, and we noticed that the majority are located around the “Ring of Fire.” This is the edge of the tectonic plates, where lots of volcanoes have formed. We colored a printable that showed where the tectonic plates are located, and another map where the Ring of Fire is located. The children noticed the similarities.

ring-of-fire

plate-tectonicsTo understand tectonic plates, one of the activities in the book is to boil an egg and crack the outside shell. In order to see the edges of the shell pieces better, you might want to color the egg like an Easter egg, with food coloring. Use 1 cup of boiling water, 2 teaspoons of vinegar, and several drops of food coloring. The longer you leave the egg in the dye, the brighter the “tectonic plates” will be. Make sure you crack the shell before you dye the egg, so that the edges of the shell are darker.

We had fun studying plate tectonics and earthquakes. After the kids were in bed, my husband and I reminisced about how much we missed earthquakes back when we lived in California. Isn’t that funny?

Bright Ideas Press compensated me for blogging about science through using the book Earth and Space.

The Earth: Hands-on Activities

Monday, February 3rd, 2014

the-earth-hands-on-activitiesArticle contains affiliate links. I was compensated for my work in writing this post.

We are starting a study of Earth and Space by Bright Ideas Press. This book was an answer to prayer because my youngest son specifically asked to study rocks and minerals, the weather, and outer space. Who knew I would find them all in one book, with tons of hands-on activities and printables for notebooking, and that I would be compensated for blogging about our homeschooling adventures! Those of you who have heard my finances testimony and understand my prayer life will know how I’m glorifying the Lord right now for embarking on this fun science adventure with my kids!
earth-and-space-bright-ideas-press

The first two chapters are about Earth and its structure. We colored a picture of creation and glued it onto black card stock paper. We wrote the title on the black page in silver permanent marker, before sliding it into the front of our notebook binders.

earth-and-space-creation

We located the continents and oceans on our maps and on the globe. We talked about the earth’s rotation (spinning), and we dramatized the revolution of the earth around the sun. You can watch these activities in our video demonstration:

layers-of-the-earth

Another hands-on activity was to stab a ball of Play-doh with a toothpick, to show how the earth spins on its axis.

layer-sheetUsing one of the printables, we colored and cut out the different layers of the earth, gluing them on top of each other. Then we created a model of the earth layers out of clay. We had trouble cutting the clay with dental floss, so we used a table knife. This caused the layers of the earth to mix slightly, as you can see from the picture at the top of this page. I almost wish the clay was edible, because it looks good enough to eat!

Biology Comedy Show

Monday, January 20th, 2014

biology-comedy-show-1As the culminating activity for our year of high school biology, we decided to do a fun and corny Biology Comedy Show. We performed it during my son’s amoeba birthday party. You can take a look at the amoeba cake we ate, the live amoebas we looked at through the microscope, and the Lego bacteria my son put together.

My husband put up a green screen behind our Biology Comedy Show, so that we could superimpose some amoeba footage that my son had captured earlier. The whole family was involved in the show. You will hear sounds from the audience who was watching, especially during the charades section of the show, where my son acted out various topics from biology. The whole show is less than five minutes, even though it took us a year to accumulate all the jokes.

biology-comedy-show-2

If you enjoyed this comedy show, I recommend you go watch our other corny comedy show: Ancient Rome Comedy Show. We performed it years ago when my kids were younger.

If you are a homeschooling family who is studying biology, I highly recommend joining the Unit Study Treasure Vault, which has tons of biology videos in it. I filmed everything we did for our high school biology in our family, and I show you how to modify the topics for younger siblings to enjoy.

biology-comedy-show-4 biology-comedy-show-3

Food Web Activity

Thursday, November 28th, 2013

food-web-activity

Look at this exciting food web activity you can do with your biology students! All you need is a pile of plastic animals, a dark blue poster, string, a silver Sharpie marker, and tape. This food web activity will help your biology students to understand which animals eat which other animals. This is more complicated than the food chain that goes in a straight line that you learn about in elementary school. In real life, some animals eat each other!

Grab the dark blue poster and set it down on the table. Dump the plastic animals out of the bag. I bought a huge bag of plastic animals at a yard sale for fifty cents, so you don’t have to buy the plastic animals new. Goodwill is another source. Or you can borrow the animals from a friend with young children, and give the animals back after this activity.

Students will now set up the animals with the tertiary animals near the top, the secondary animals near the middle, and the primary animals at the bottom of the poster. You might want to include a plastic plant because many animals are herbivores. All primary animals are herbivores, so connect the string from the plant to the herbivore. Tape it down on each end. With a silver marker, draw an arrow indicating that the herbivore eats the plant. (The arrow points to the plant. Unless you want to show how the food energy flows, then do it the opposite direction.)

Continue in this way. The secondary animals eat the primary animals, but some of them also eat plants. One animal can point to more than one food source. This is why the food web looks like a tangled spider web. The tertiary animals eat the secondary animals.

You will notice that an eagle will eat a snake, but that a snake can also eat an eagle! Amazing!

For more fun biology activities, join the Unit Study Treasure Vault.