ELS15 – Comparative sizes (EV3)

ELS15 – Comparative sizes  (EV3)

Lego Mindstorms EV3 v 1.2.1 for EV3 Firmware version 1.09H

A set of behaviours to make EV3 speak questions asking a student to recognise the relative sizes of objects (bigger, smaller, biggest, smallest and medium sized). Can be used with ELS15  from the curriculum document. This behaviour should be used with a reward/feedback behaviour such as encourage and praise, along with sets of cards or objects.

Part 1 – The EV3 can perform the following separate programs (ELS15p1):

  • Program path: “ELS15p1/biginbig” – Robot says, “Find the big objects and put them into the big box?”
  • Program path: “ELS15p1/smallinsmall” – Robot says, “Find the small objects and put them into the small box?”
  • Program path: “ELS15p1/makepairs” – Robot says, “Can you make pairs by putting the big ones with the small ones?”
  • Program path: “ELS15p1/putinorder” – Robot says, “Can you arrange them in order from the smallest to the biggest?”
  • Program path: “ELS15p1/smallest” – Robot says, “Which thing is the biggest?”
  • Program path: “ELS15p1/biggest” – Robot says, “Which thing is the smallest?”
  • Program path: “ELS15p1/medium” – Robot says, “Which is the medium-sized one?”


Part 2 – The EV3 can perform the following separate programs (ELS15p2):

  • Program path: “ELS15p2/ordinals” – Robot says, “The elephant is the biggest. The elephant is the first. The cow is medium. The cow is the second. And the rabbit is small. The rabbit is ……. Which one is the rabbit?”
  • Program path: “ELS15p2/rabbitisthird” – Robot says, “The rabbit is third.”

These may be called using the Edurob App.

file: EV3_ELS15p1.zip (Download)
file: EV3_ELS15p2.zip (Download)
Use with file: EV3_EncouragePraise.zip (Download)

About andy

Dr. Andy Burton is a research fellow in the ISRG.
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