Lego EV3 & iPads 

  
There are always challenges with new “stuff” and from my perspective that’s part of the fun. Today we ran a session with two Year 5 classes using Lego EV3 robots that we had recently purchased. This was experimental. We have used Lego Mindstorms before, but this was our first venture using the EV3s and in teaming them with our iPads via Bluetooth. 

The sessions went really well. Preparation for this activity was crucial. We were dealing with a newly acquired app and a new robot. We also needed to put together a series of activities which would entice and challenge the children. It was also important to anticipate different capabilities and provide enough progressively for the children to complete in just under two hours.

Lesson overview:

Introduction:

  • The EV3 Brick – input, output, navigation, display
  • The Robot – physical attributes 
  • The App – lobby, robot educator, programs
  • Geometry and measurement
  • Programming – motors, forward, back, turning, rotations, angles, wait, loop (note: introduced sensors briefly, but not required for this lesson)
  • Bluetooth 

 
  

   

The greatest challenge, it turned out, wasn’t actually to do with programming or in completing tasks, but was actually about enabling the Bluetooth connection. This is where playing before introducing technology is vital. As soon as we started experimenting with Bluetooth on the EV3s we realised that all the robots had the same name and that with multiple robots and multiple children robots needed to be easily identifiable. We named each EV3 brick to avoid confusion. Additionally we noticed that sometimes the EV3 Programming App didn’t pickup the Bluetooth connection even though in settings the Ev3 and the iPad were paired. This was resolved by restarting the app (double click the home button on the iPad and then push away the programming app). Even the pairing process wasn’t simple when adjusting settings on the brick via the buttons. Here I must say that once paired the Bluetooth interaction between the iPad and the EV3 was brilliant – getting rid of clumsy plugging of wires made it easy. 

The short video below shows the students in action. The children worked, cooperatively, collaboratively and purposefully. There was full engagement across the two Year 5 class sessions. The other thing which was great to see was the perseverance of groups to complete tasks even following repeated failure. It was a rich learning experience for us all. 

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