[table][tr][td]Subject: [/td][td]Mathematics[/td][/tr][tr][td]Grade Level:[/td][td]7th[/td][/tr][tr][td]Duration:[/td][td]30 min[/td][/tr][tr][td]Technology:[/td][td]teacher computer with projector, computer for students[/td][/tr][/table]

Dividing segments into a certain proportion

The students are able to divide a segment graphically into a certain proportion.

[b]Lesson Objectives[/b][br][list][*]The students are able to divide a segment graphically with pen and paper. [/*][*]The students are able to divide a segment into equal parts.[/*][*]The students are able to divide a segment into any given proportion.[/*][*]The students are able to explain how to divide a segment into a certain proportion.[br][/*][/list][br][b]Assessments[/b][br][list][*]The students are able to divide a segment graphically into a certain proportion and to solve different tasks.[br][/*][/list]

The students work independently on the computer and explore the applet on the worksheet. After they have answered the questions below the applet, the students should solve examples in their workbook graphically. They can still use the applet if they need some help.

The students need the computer throughout the lesson sequence.[br]No prior knowledge of GeoGebra is necessary for working with this worksheet. [br]Alternatively, this applet can also be demonstrated by the teacher on the projector and the construction steps can be discussed and elaborated together.