Needs New Photo

A2-01: CARTESIAN COORDINATE AXES
A2-02: XYZ AXES ON EXTENDED HANDLE
A2-11: CIRCUMFERENCE VS. DIAMETER - CHAIN ON CYLINDER
A2-12: SLATED SPHERE
A2-15: HYPERBOLOID FROM STRAIGHT LINES
A2-21: MAGNETIC VECTOR BOARD
A2-23: VECTOR PRODUCT
A2-32: HEIGHT MEASUREMENT BY TRIGONOMETRY
A2-61: EXPONENTIAL INCREASE - CHESSBOARD AND RICE
B1-07: DOUBLE CONE - SMALL
B1-09: CENTER OF MASS - TRIANGLE
B1-11: BALANCE MAN
B1-12: CENTER OF MASS - HINGED STICK PARADOX
B1-17: CENTER OF MASS - STICKS
B1-21: BALANCE BEAM - VARIATION ON THE TIGHTROPE WALKER
B1-22: CENTER OF GRAVITY USING TEETER TOTTER
B1-24: CENTER OF MASS - CARTS ON BALANCE BOARD
B2-01: SUM OF FORCES IN A LINE
B2-02: SUM OF FORCES - SPRING SCALES
B2-03: EQUILIBRIUM OF FORCES - INCLINED PLANE

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