GeoGebra's Input Bar

IDevice Icon Algebraic Input
  1. Open a "New Window" and activate the "Input Bar"
  2. De-select the "Spreadsheet View"
  3. Type the following texts verbatim in the Input Bar and record your observations each time. Every entry must be confirmed by pressing "ENTER/ RETURN" Key on the Keyboard
  • a=12
  • A=(1,2)
  • b=Segment[A,a]
  • B=(4,7)
  • p=Polygon[A,B,5]
  • "Area of polygon p =" +p

Manipulate the objects and describe your observations

save the current file as "Input_1.ggb" in the default directory


iDevice icon Discussion

Distinguish the following, in reference to the "Input Bar"

  • a=12 and 12
  • h=(-3,5) and H=(-3,5)
  • "Area of polygon p =" +p and  "Area  of polygon p = +p"

 

What is the difference between GeoGebra's "Toolbar" and "Algebraic Input Commands "

« Previous | Next »

Licensed under the GNU Free Documentation License

JCA Presentation: Using GeoGebra in Secondary School Mathematics teaching