WCYDWT? Magic Expandable Chelonian

What can you do with this?

The Magic Expandable Chelonian : Grows 600%!
(Do not swallow!)

Yes - it's fun AND educational too!

My head is spinning with possibilities!  I'm very curious to see the questions my different maths classes ask. I bought three of these today at the $2 shop - the plan is to show the class the original packet then see what happens. I'm hoping to try out some version of Dan Meyer's WCYDWT rubric and half way through the period bring out some turtles "I expanded earlier". The packaging suggests dramatic growth in 48 and 72 hours - so I'll get some going a few days earlier.

It's fun and educational - or so the packaging claims. To be honest, I don't even mind if it's not educational - I just want to see what happens to the turtle! And what would happen if I did swallow the turtle and then drank a litre of water?

Next in this series: The Magic Expanding Chelonian - Day 1