Archive for the ‘Science’ Category

Candy Experiments

Wednesday, December 29th, 2010

candy-experiments

Whenever there is too much candy in the house is a great opportunity to do candy experiments. One experiment is the acid test. Pour water into several glasses, and plunk in a candy into each one. If the candy is sour, it will be more fun. Dump a spoon of baking soda into the water. If bubbles appear, the candy is acidic.

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Another experiment is to see whether candy dissolves faster in cold or hot water. (The molecules move faster in hot water, which is why it dissolves faster.)

My daughter was watching as M&M’s dissolved in a shallow pan of water. She stuck a paper towel into it and saw the color creep up the paper towel.

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You can do a sinking and floating experiment, to see which candies are denser than water. None of our candy floated, since it was hard candy. Lighter candy like 3 Musketeers would float, but who wants to ruin chocolate? Chocolate is never a left-over candy at our house.

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The most fun activity we did during these candy experiments was to throw M&M’s into some water to dissolve. (I know, I’m wasting perfectly good chocolate, but this experiment is worth it.) The M’s began floating on the top of the water, disconnected from the M&M’s. (The wax from the M’s was less dense than water.) It was almost like a magic trick.

#10 Electronics Kit

Monday, December 6th, 2010

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My kids have enjoyed playing with an electronics kit for years, so I am including it as #10 in the countdown for the best open-ended toys ever. I’m judging open-ended toys based on the sheer number of hours my kids have spent with them, and the fact that they learn a lot while having fun. Because I have 3 boys and only one girl, I’ve used my top two favorite open-ended toys for girls in the countdown, from when I was a child growing up with 3 sisters. I spent literally hundreds of hours as a girl playing with my top two favorite toys. No other toys compare to those two girl toys, in my mind.

I’ve included toys for younger as well as older kids. This electronics experiment, for example, is for slightly older kids. This video shows the most fascinating experiment I’ve seen with the electronics kit, which is a piano made out of pencil lead. The circuit is completed because the lead of the pencil conducts electricity. Depending on where you place the wires, you hear a different sound!

This year all three of my boys played with their electronics kit more than any other toy.

Mystery Novels About Creation

Thursday, December 2nd, 2010

mystery-novels-about-creationRecently I’ve had the pleasure of reading three books in the Truth Seekers Mystery Series. I won the books as a door prize for the Ultimate Homeschool Expo Fall, which is a holiday edition of the Ultimate Homeschool Expo. The door prize was actually very appropriate for our homeschooling this year, since we not only studied mystery stories, but we also studied the creation vs. evolution debate. My two older sons watched the DVD series by the Institute for Creation Research, and we talked about each 30-minute DVD, discussing the information presented. My oldest son Bryan is visibly offended every time he sees evolution presented as fact in videos and books. I told him that evolution is taught in the public school system as fact, and that most people don’t know both sides of the debate.

The Truth Seekers books, by Christina and Felice Gerwitz, are actually fiction books that contain lots of information about creation science, presented in a fun way as the characters are engaged in a mystery. Many chapters end with a cliff hanger – one chapter literally had a character holding on to the side of a cliff with no safety rope, since the rope had been cut. Each of the three books I read centered their mystery around an archaeological dig, bringing to light surprising facts about creation science. Evolutionists are treated with dignity, not portrayed as idiots. My husband often reminds me that many intelligent people believe in evolution.

When the books arrived at my door, I accidentally started reading the second book first. The heart-stopping suspense kept me reading, since someone fell out of an airplane without a parachute. Further on in the story, there was a mansion with trap doors and secret passageways. Suspicious people weren’t what they seemed. So much action permeated the book that it was truly a pleasure to read. I handed the books to my 9-year-old son, who devoured them quite quickly and wanted to talk to me about different scenes. For example, the first book started with a boat chase with a helicopter hovering over the boat, letting FBI agents on board. Bullets were flying, and the main characters tried to stay down to avoid getting hit.

Christian young people really ought to have a strong foundation of creation science to be able to defend their faith in the real world. What better way to do that than to read some suspense-filled mystery novels?

Three-Dimensional Anatomy Poster

Friday, November 12th, 2010

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Years ago when we studied anatomy, my children made a life-sized poster of each of the systems of the body, one by one as we studied them. The child would lie down on the butcher paper, and we would trace the real body of the child. We usually covered one system a week or one system for two weeks. We colored each system a different color so that we could distinguish which was which. It was a fun project that the children enjoyed.

Recently when I went to the state fair with my children, we saw a three-dimensional anatomy poster of two of the systems of the body: the circulatory and digestive systems. The intestine was made of panty-hose, and the stomach was a clear plastic bag with cut-out pictures of food in it. (I like humor in a project occasionally because it adds personality to the artwork.) A drinking straw was the esophagus. The heart, lungs, and trachea were made of felt, and it looked like the child stuffed it and sewed it around the edges. The brain was like the bottom part of an old-fashioned mop. It was really fun to look at!