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Elementary
students learn about flips, mirror or reverse images in geometry because that
knowledge is helpful when constructing projects, sewing clothes, building
models, doing jigsaw puzzles or tracing and copying artwork.
Materials
needed: Pencil;
paper; blackboard; chalk
- Using a bold newspaper
headline, preferably one with block style lettering, use a mirror to show
mirror image.
- Do a fold over
exercise: fold a sheet of paper lengthwise, open back up, students write first
name in cursive heavily with pencil filling half the sheet, fold over again
and rub the paper heavily to transfer the pencil image to other half of sheet,
then use crayons or markers to color in the resulting design.
- Draw their name
in flip form on a sheet of paper, draw over the name heavily with chalk, then
hold the paper face down on the blackboard and rub the sheet with their hand
to transfer their name to the board.
- See flips by
holding sheets of paper on a window to see in reverse through the paper.
- All video games are
not bad. Playing the computer game Tetris (or one of its endless variations)
is an excellent way to visualize flips and turns. It shows the importance of
pieces fitting together and can begin your discussion on angles as used in
geometry. Older students can visualize the concepts of area and perimeter.
- Vocabulary: symmetry,
solid vs. void, right angle, etc.
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