Create an interactive figure that allows your students to explore the concept of slope of a line.

[table][tr][td]1.[/td][td][icon]/images/ggb/toolbar/mode_join.png[/icon][/td][td]Create a line [i]a[/i] through two points [i]A[/i] and [i]B[/i].[/td][/tr][tr][td]2.[/td][td][icon]/images/ggb/toolbar/mode_orthogonal.png[/icon][/td][td]Construct a perpendicular line [i]b[/i] to the y-axis through point [i]A.[/i][/td][/tr][tr][td]3.[/td][td][icon]/images/ggb/toolbar/mode_orthogonal.png[/icon][/td][td]Construct a perpendicular line[i] c[/i] to the x-axis through point [i]B.[/i][/td][/tr][tr][td]4.[/td][td][icon]/images/ggb/toolbar/mode_intersect.png[/icon][/td][td]Intersect perpendicular lines [i]b[/i] and [i]c[/i] to get intersection point [i]C.[/i][br][/td][/tr][tr][td]5.[/td][td][icon]/images/ggb/toolbar/mode_polygon.png[/icon][/td][td]Create a triangle [i]ACB.[/i][/td][/tr][tr][td]6.[/td][td][icon]/images/ggb/toolbar/mode_showhidelabel.png[/icon][/td][td]Hide the labels of the triangle sides unsing the [i]Stylebar.[/i][/td][/tr][tr][td]7.[/td][td][icon]https://www.geogebra.org/wiki/uploads/thumb/4/40/Menu_view_algebra.svg/100px-Menu_view_algebra.svg.png[/icon][/td][td]Calculate the rise: [code]rise = y(B)-y(A)[/code].[br][u]Hint[/u]: [code]y(A)[/code] gives you the y-coordinate of point [i]A[/i].[/td][/tr][tr][td]8.[/td][td][icon]https://www.geogebra.org/wiki/uploads/thumb/4/40/Menu_view_algebra.svg/100px-Menu_view_algebra.svg.png[/icon][/td][td]Calculate the run: [code]run = x(B)-x(A)[/code].[br][u]Hint[/u]: [code]x(B)[/code] gives you the x-coordinate of point [i]B.[/i] [/td][/tr][tr][td]9.[/td][td][icon]/images/ggb/toolbar/mode_text.png[/icon][/td][td]Insert [i]dynamic text1[/i]: [code][/code][code]rise = [/code]and select [i]rise [/i]from the list of objects on tab [img]https://wiki.geogebra.org/uploads/thumb/4/4e/Geogebra-logo-elipse.svg/16px-Geogebra-logo-elipse.svg.png[/img] of the [i]Advanced [/i]section.[/td][/tr][tr][td]10.[/td][td][icon]/images/ggb/toolbar/mode_text.png[/icon][/td][td]Insert [i]dynamic text2:[/i] [code]run = [/code]and select [i]run [/i]from the list of objects on tab [img]https://wiki.geogebra.org/uploads/thumb/4/4e/Geogebra-logo-elipse.svg/16px-Geogebra-logo-elipse.svg.png[/img] of the [i]Advanced [/i]section.[/td][/tr][tr][td]11.[/td][td][icon]https://www.geogebra.org/wiki/uploads/thumb/4/40/Menu_view_algebra.svg/100px-Menu_view_algebra.svg.png[/icon][/td][td]Calculate the slope of line [i]a: [/i][code]slope = rise / run.[/code][/td][/tr][tr][td]12.[/td][td][icon]/images/ggb/toolbar/mode_text.png[/icon][/td][td]Insert [i]dynamic text3:[/i] [code]slope =[/code] and select [i]slope [/i]from the list of objects on tab [img]https://wiki.geogebra.org/uploads/thumb/4/4e/Geogebra-logo-elipse.svg/16px-Geogebra-logo-elipse.svg.png[/img] of the [i]Advanced [/i]section.[br]Additionally, you may add a static text: slope=rise/run.[br][u]Note[/u]: Use[i] LaTeX formular [/i]to enter a fraction. [br][/td][/tr][tr][td]13.[/td][td][img]https://www.geogebra.org/wiki/uploads/thumb/d/db/Stylingbar_icon_graphics.svg/32px-Stylingbar_icon_graphics.svg.png[/img][/td][td]Change properties of objects in order to enhance your construction and fix text that is not supposed to be moved.[/td][/tr][/table]