Pi (3.14) I would bring an imaginary piece of pie to my mouth and then hold up 3 fingers, 1 finger and 4 fingers ... and as I did this I would say, "Pi is 3 point 1 4) square root ... I would close four fingers around two fingers and then pull the two fingers out ... thus showing that for square root we find the smaller number (2) inside the larger number (4) ...
Division of decimals
To divide (using a downward slashing motion with my hand like cutting) a decimal (make a pointing motion in the air and a popping sound with my mouth) by a decimal (repeat) you swing the decimal in the divisor (with my left hand I point and loop my finger left to right) and then the decimal in the dividend (repeat using my right hand)
"When you're adding fractions... make a plus with your arms
or subtracting fractions... make a minus with your arm
the bottom stays the same... arms by side, perfectly still
and the top is where the action happens." hands on shoulders and wiggle your top
STATISTICS: Mean: make a "mean" face and put right and left hands next to your face in the shape of claws. The mean is "mean" because we have to do two operations to calculate.Review defintion with gestures two fingers for two operations, crossed arms or fingers for addition; chopping motions for division.
Median: spread right and left arms perpendicular to the floor and bring hands to the middle underneath the chin (as if in prayer or meditation). I use a monotone voice to define - median means middle; put the data in order from least to greatest and find the middle.
Mode: use right or left hand to motion as if scooping ice cream. Mode means the most, so you need at least two scoops.
Range: arms out to the side as in median. Use a slashing motion for subtraction.
Outlier: arms out to the side using a pushing motion to explain that outliers are far from the rest of the data and can be greater than or less than.
point Place a singe fist on your chest. line Put your arms straight out hands open to represent the arrows.
line segment Put your arms straight out with your hands closed to represents points.
Ray Put one arm straight out with a open hand and one hand closed on your chest.
Vertical parallel lines Place your arms in front of your chest with your elbows bent at 90 degrees with your palms open and facing each other. Think of it as if you were pulling a football into your chest with your hands on each end.
Horizontal parallel lines place your right arm parallel to floor bent at the elbow with your palm to floor. Then place your left arm under the right arm bent at elbow with about 8 inches in-between.
oblique or diagonal lines move vertical lines from the elbow like a windshield washer.
Intersecting lines Form an x with both arms palms open.
perpendicular lines Place your left arm parallel to the floor palm down. Place your right elbow on top of left hand at 90 degrees.
acute angle from perpendicular lines reduce angle less than 90 degrees
obtuse angle from perpendicular lines open angle greater than 90 degrees
Straight angle see line
CIRCLE: Draw a large circle from top to bottom with your two index fingers (each finger draws half of the circle.
CENTER: Point both fingers forward together in the center of the circle you just drew.
RADIUS: From the "center" gesture, move one finger from the center to the edge of the circle (the other stays put).
DIAMETER: From the "center" gesture, move both fingers out to the edge.
"Ordered pairs is like learning to run" (run in place) "before you can fly ( flap your arms like wings) Because you have to do x( cross your arms in the shape of an x) before you do Y ( make a Y as if you were doing the YMCA dance)
It is Eye-soscele Triangle, when you say "eye" you point to your eyes, then make a triangle with your hands, you have a pair of eyes just like an isosceles triangle has a pair of congruent sides...
"Absolute value (hold hand vertically and parallel to each other) is the distance (spread your arms far apart) from a number (on one hand hold up all 5 fingers andstart moving that hand towards the other) to zero (use the other hand to make zero)"