Visualizing Integer Addition on the Number Line Preparations Open a new GeoGebra window. Switch to Perspectives Geometry. – Show the Input Bar (View menu). In the Options menu set Labeling to All New Objects. Construction Steps 1 Open the Properties dialog for the Graphics View. Hint: Choose Preferences and then Graphics. On tab xAxis set the distance of tick marks to 1 by checking the box 2 Distance and entering 1 into the text field. On tab Basic set the minimum of the x-Axis to -21 and the 3 maximum to 21. 4 On tab yAxis uncheck Show yAxis. 5 Close the Properties dialog for the Graphics View. Create a slider for number a with Interval -10 to 10 and Increment 6 1. Create a slider for number b with Interval -10 to 10 and Increment 7 1. 8 Show the value of the sliders instead of their names. Hint: Stylebar - Set label style - Value 9 Create point A = (0 , 1). Create point 10 B = A + (a , 0). Hint: The distance of point B to point A is determined by slider a.
Visualizing Integer Addition on the Number Line Preparations Open a new GeoGebra window. Switch to Perspectives – Geometry. Show the Input Bar (View menu). In the Options menu set Labeling to All New Objects. Construction Steps 1 Open the Properties dialog for the Graphics View. Hint: Choose Preferences and then Graphics. 2 On tab xAxis set the distance of tick marks to 1 by checking the box Distance and entering 1 into the text field. 3 On tab Basic set the minimum of the x-Axis to -21 and the maximum to 21. 4 On tab yAxis uncheck Show yAxis. 5 Close the Properties dialog for the Graphics View. 6 Create a slider for number a with Interval -10 to 10 and Increment 1. 7 Create a slider for number b with Interval -10 to 10 and Increment 1. 8 Show the value of the sliders instead of their names. Hint: Stylebar - Set label style - Value 9 Create point A = (0 , 1). 10 Create point B = A + (a , 0). Hint: The distance of point B to point A is determined by slider a.
ggb-intro-en44-2014-07-17.docx