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Guess the Dominoes

This task depends on learners sharing reasoning, listening to opinions, reflecting and pulling ideas together.

Eye View

Stage: 2 Challenge Level: Challenge Level:1

The left picture below shows a tower of three red cubes and a tower of five blue cubes. 

The right picture shows a tower of three red cubes and a tower of six blue cubes. 

All the cubes are exactly the same size so why do the towers look the same height in both pictures?