Copy of Concave and Convex Lenses

Author:Sandeep Bappoo, Tom Walsh

Move the tip of the "Object" arrow to move the object. Move the point named " Focus' " to change the focal length. Move the point named " Focus' " to the right side of the lens to change to a concave lens.

New Resources

Squares Question
Angle Addition Postulate (V2) - Integer Solutions
Rovnoběžnost rovin
Squaring a Rectangle (PST Version)
Perpendicular Lines: Quick Exploration

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Construction of a square
Verschuiving
LEKSE UKE 45
Place Value Disks
page 138

Discover Topics

Median Line
Pythagoras or Pythagorean Theorem
Root
Tangent Line or Tangent
Logarithmic Functions