Super Star Scientist
Barrett!
Scientist Barrett was ready with his lab coat, goggles and materials needed for his experiment!  His materials were:  corn starch, water, a bowl, and a spoon.
Experiment:  The Hard Liquid
Objective:  To find out if Oobleck is a liquid or solid
Fist, Barrett poured corn starch in the bowl.
Next, he added water…
  
…and a little more water (with his assistant, Mom!)
…and a little more water, and they stirred.
Once it was at the right consistency, Barrett formed a ball of the Oobleck in his hand…so it's a solid, right?
  
But wait!  When he opened his hand, it turned into a liquid and oozed between his fingers!  So it's a liquid, right?
But wait!  He smacked it with his hand and it was hard and didn't splatter…so it's a solid, right??  But, he was also able to stick a finger in…so it's a liquid, right??
  
Conclusion:
Oobleck acts as both a liquid and a solid