This is tactile learning at it's best!  We're rollin up our sleeves and getting messy up to our shoulders :)!  Slime...yes please.  Oobleck...you got it.  Foam...why not!  You know all those things you want to do with your little ones because you know it's so important for brain development... BUT you never get around to actually doing it because don't want to clean up the mess afterwards :)?!  Well, we're taking care of it all :)! 
Cue the... MESS!