Edison and the mystery line

Did you know that Edison robots have different sensors that can detect different things? One of these sensors is the line tracking sensor.

Can you program Edison to follow a mysterious line?

Get the materials for this lesson

You will also need to use the EdScratch programming app.

About this lesson

Recommended time

55 minutes




See below

Grade levels

Year 6+

Edison and the mystery line Hour of Code activity

Kick-start student’s exploration of using Edison’s line tracker using Edison robots and the Scratch-based programming language EdScratch. Students first become familiar with the Edison robot’s line tracking sensor technology and experiment with the red LED on different coloured surfaces. They will then move on to mastering a mystery line using the concept of algorithms.

This 1-hour lesson is designed to allow students to work independently through two parts:

  • Part 1: How does Edison’s line tracking sensor work?
  • Part 2: How do you master the mystery line?

Prerequisite knowledge

To be successful with this activity it is recommended that students:

  • Have used block-based coding applications
  • Familiarity with Edison and EdScratch
  • Understand sequence and sequential programming
  • A basic understanding of the input-process-output cycle


Celebrate student success!

Recognise your students’ achievements in taking on an Hour of Code challenge with Edison robots by presenting them with a certificate of completion.


Is this your first time using Edison?

If this is your first time using Edison or EdScratch, there are a few extra things you need to know. This Getting started with Edison and EdScratch set will help you get the most out of Edison, EdScratch and this activity. Inside you will find:

  • step-by-step help for setting up your robots and programming devices plus
  • a hands-on introduction activity for students.
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