GeoGebra
Estimation Routines with GeoGebra
How Many?
Placing Numbers (up to 50)
Fraction Guesser
What's the number?
Part-Whole Rectangles
Broken Clock (nearest minute)
Relative number sizes via area
Rounding within 1000
What's the angle?
Slope Guesser
GeoGebra
Estimation Routines with GeoGebra
Author:
John Ulbright
How Many?
Placing Numbers (up to 50)
Fraction Guesser
What's the number?
Part-Whole Rectangles
Broken Clock (nearest minute)
Relative number sizes via area
Rounding within 1000
What's the angle?
Slope Guesser
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