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With mouth wide open, vibrating air coming up the throat from the vocal chords leaving the open mouth and spreading in all directions. Hi, I am Janice VanCleave, author of 50+ best-selling science experiment books for children ages 4 through high school. I taught science for 27 years and now am creating this science website.   My scream was not staged. The picture was to be of two adult cats, which I was holding. A microsecond before the camera snapped, the two cats dug their claws into my skin as they prepared to leap out of my arms. A picture like this is great for making inferences. Kids could make "guesses" as to why I am screaming. They would be drawing on facts from the photo, such as I look like I am in pain or maybe I am just pretending.

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Home » Lines of Symmetry

Lines of Symmetry

By Janice VanCleave

I love making paper designs by cutting piece out of folded paper. If the paper is folded into equal parts, the design formed is a symmetrical figure, such as the paper cut-out shown.

The original piece of paper was folded in half twice. The first fold was from top to bottom and the second fold was from side to side.

Cutting pieces out of the folded paper produces a figure with four lines of symmetry.

A line of symmetry is a line drawn down the center of a figure and if folded on that line the two sides of the line exactly fit together, like placing your two hands together. The cutout figure has four lines of symmetry as shown.

Look around and find things that are symmetrical, such as leaves, flowers, and the body of animals (including yours). How many lines of symmetry can you find on each object you examine?

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Filed Under: Math Tagged With: symmetry

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