Zoo Data - reading block graphs

Hiya, Used the lesson today with my class - they loveddd it, went a lot better than I expected. We really bigged up the problem saying we had phone call from zoo keeper, animals had escaped and mixed with another zoo - the zoo keepers don't understand bar charts etc. They were all soo engaged it was lovely. Only problem found was - "I just dont get how the penguins escaped, they dont have hands for the lock and they are too small to jump"

Lovely idea for interpreting graphs. Would be great when used with the idea below. Thanks for sharing.

Fits in brilliantly with my new topic and our current math unit, thanks for a lovely idea!