Living Science Author: Gail Gibbons

Gail Gibbons is a prolific, award-winning author of children's non-fiction, including many science titles. Her colorful books are filled with all kinds of interesting information about whatever topic she is writing about, whether that be coral reefs, turtles, boats, the solar system, or St. Patrick's Day.

Her web site has a complete list of her books, as well as her recent titles. Also available are two free downloadable teacher's guides (pictured above): A Year with Gail Gibbons and Explore the World of Science with Gail Gibbons. Our family enjoys her titles and they are very easy to find.

Enzymes and gelatin

This is a fun and easy experiment that demonstrated the properties of enzymes.

You need a fresh pineapple (canned with not work) with the skin removed, three bowls, and a box of Jello gelatin.

Crush the pineapple in a blender until you have a fairly smooth but pulpy mixture. Place one tablespoon of the pineapple into the first bowl labeled, "Fresh pineapple." Label a second bowl, "Heated pineapple" and set it aside.

Prepare the Jello as directed on the package. Pour it into the three bowls leaving a little room in the Heated Pineapple bowl (I needed a fourth bowl because mine were small.)

Cook the rest of the pineapple on the stove for 5 minutes, stirring constantly. It will boil, which is fine; just keep stirring it. When done add 1 tablespoon of the cooked pineapple to the bowl labeled, "Heated pineapple" and stir thoroughly.

Place the bowls in the refrigerator for 4 hours. What happened?

The bowl with the fresh pineapple did not harden into Jello while the bowl with the heated pineapple did. Pineapple contains an enzyme that breaks down protein, and gelatin is protein. Heating the enzyme destroys it allowing the Jello to harden.

Canned pineapple cannot be used because it is heated before it is canned.

This experiment will work with papaya as well. The enzyme in papaya is called papain and is so potent that it is the active ingredient in prescription debriding ointments. My Blue Goo Cracked Heel ointment I get at Walmart also has papain in it, but not for long. As of November 4, 2008 the FDA has banned papain from all over-the-counter products. I better stock up now and make sure I don't rub my eyes after applying it to my feet.

Bird Cinema

Bird-Watching meets You-Tube at Bird Cinema. You can upload your own clips or view other amateur and professional videos about birds. I find this great for matching bird sightings with bird sounds, and other informative videos are available, too. Here is one of a downey woodpecker:

More backyard finds--caterpillars

We have come across some interesting caterpillars crawling around our backyard this fall. This first one looks to be a banded tussock moth (Dasychira obliquata.) Here is what it looks like as an adult moth (not as aesthetically interesting.)

This critter is a polyphemus moth (Antheraea polyphemus.) The moth this will eventually become is enormous! We will have to keep watch for them in the coming weeks. If I find this caterpillar again we may keep it until it metamorphoses.

It just looked to us as if it were Eric Carle's inspiration for his Very Hungry Caterpillar.

Science Kits

I like to keep science kits around. My kids always enjoy the thrill of opening and using them. I like having something complete to pull out when I've had too busy of a week to plan a project. My remind my relatives that they can browse Home Science Tools around holiday or birthday times if they don't know what to get for the kids.

I often find kits for a decent price at discount resellers like T.J. Maxx or Marshall's, and warehouse stores like Costco or BJ's Wholesale Club. These are hit or miss, but usually the hits are pretty good. I am already looking, buying, and putting away for Christmas.

This photo shows ds#2 with a Sensory Dome he got for his birthday, which is a terrarium with plants that appeal to the various senses. The boys had a great time putting this together, and ds#2 in particular took keen interest in reading about the plant information on the planting tags.