displcement method

Autor:walterliu

Drag the convex lens to two different positions at which images will be formed on the screen. Record the distance between the two positions and calculate the focal length of the lens.

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Addition within Two Places
Dividing a 2-digit number by a 1-digit number (1)
bewijs stelling van Pythagoras
Dividing a 3-digit number by a 1-digit number (2)
Mosaic

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Construction #1
Function over function (denominator greater) 2
Mittelsenkrechte
Vertical Angles

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