• 2.5 Project Assignment (3/4): Create / (Test)

    • Learning Objectives:

      After this lesson, students can

      • name and use some common tools for assembling parts.
      • find the centre of a circle by mathematical and D&T methods respectively.

    • 1. USE OF SOME COMMON TOOLS FOR ASSEMBLING PARTS

    • Tools demonstrated in the lessons

      Use of glue, e.g. white glue (PVA)



      Soldering iron



      Hot glue gun



      Divider

    • 2. FIND THE CENTRE OF A CIRCLE

    • Method 1

      By the point of intersection of the perpendicular bisectors of 2 or 3 chords

      Method 2 

      By 2 right angled triangles



      Method 3

      By the angle bisectors of the tangents from external points

    • 2. HOMEWORK

    • HW2.5.1 Tools 测验
      受限的 不能使用除非符合任意一项
      • 你属于 2A/2R GROUP 2
      • 你属于 2S/2M GROUP 2
      • 你属于 2T/2Y GROUP 2
      • 你属于 2A/2R GROUP 1
      • 你属于 2S/2M GROUP 1
      • 你属于 2T/2Y GROUP 1