Thinking and Problem Solving Crossword

What does it mean to group similar things together?
The first of it's kind is referd to as a...
There's nothing wrong with the question you just gotta use a bunch of different approaches till one works.
The thought of thinking about thinking is still thinking but deeper.
Step by step will eventually and always get you to were you were planning on going.
Step by step will eventually and always get you to were you were planning on going but this is a short cut.
Erika I've got it!
Birds to flightless birds to live in warm climate birds to kiwi
If 5+3=8 then 8-5=3 but with thought.
This raven is in a symbiotic relationship with wolves. All ravens are in symbiotic relationships with wolves.
Backwards thinking, literally.
It worked before it'll work now.
a pool is a pool is a pool, ment for swimin not for rain drinking.
But what if i say it like thiiiiiiiisssss?
"500." "How about 300." "450." "Deal."
"No no no no!" "Wash your face!" "NOOOOOO!!!"
I was right even before it happen!
the earth is flat, even if there's "proof"
Man I going to pass this with perfect score! (but little did joji know he made a 2)
10 wins in a row? it's bound to end.
Give me what I want to hear!!