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Science students will begin to design their own atmosphere game. Students may bring in game pieces, game boards and/or posterboard from home to complete this project. Some supplies will be given out in class to students. They will be working in groups, so only one posterboard per group is needed. Some of this project will be completed at home. Other students will play and critique each groups game. The objective is to learn about meteorology in a fun way.
SYMMETRY
Students will be able to:
· Determine and use lines of
symmetry.
· Investigate and use
rotational symmetry.
· Identify objects that have symmetrical properties
WAYS
PARENTS CAN HELP
Here
are some activities you and your student can do together:
· Look for patterns in home furnishings (rugs, floor tiles, and
wallpaper) that are symmetrical. Discuss the type of symmetry and identify the
lines of symmetry and/or the degree of rotation.
· Look for symmetrical shapes in nature (leaves, trees, pinecones). Look
for asymmetrical shapes as well. Can you find a purpose or advantage in
symmetrical properties?
VOCABULARY
Asymmetrical: Describes
any figure that cannot be divided into two parts that are mirror images of each
other. In other words, asymmetrical means “not symmetrical.”
Axis of Symmetry: A
line that a figure can be folded over so that one-half of the figure matches
the other half perfectly; a line about which a figure is symmetrical.
Line of Symmetry: A
line that divides a figure into two parts, each of which is a mirror image of
the other.
Line Symmetry: Figures
that match exactly when folded in half have line symmetry.
Reflectional
Symmetry: A figure has reflectional symmetry if, after reflecting the
figure over a line, the figure lines back up with itself.
Rotation: A
transformation that turns a figure about a fixed point at a given angle and a
given direction.
Rotational Symmetry: A
figure has rotational symmetry if, after rotating it by an angle of 180 degrees
or less about its center, the figure lines back up with itself.
Symmetry: The property of a figure or expression that allows for parts of it to be interchanged without forcing a change in the whole.
