The blueprints to the Secret Room in the school are inside Nate's overstuffed locker. Use the combination (9305) that you find on the completed comic strip.
To enter the secret room from Detention, you need the blueprint and the Stink Bomb, and, of course, the gum that gets you into Detention.
Go on you tube and search big nate walk-through part___ and it will show you what to do.
It is in the secret store room behind the filing cabinet in the detention room on Big Nate Island. You need the blue prints from Nate's locker in order to access the secret room.
The yellow and blue.
Mix the yellow and the blue!
mix the blue and yellow
You do not play as Big Nate. He accompanies you around most of the island, and races you on the jet skis.
You can't play "as" Nate, but everywhere you go on the island, he tags along.
There is no Duke among the characters of Big Nate island.
You go to the science room in Big Nate and mix blue and yellow and turn the heat to 3.
First you mix the blue and the yellow which that makes green then you heat it
in the science room mix blue and yellow heat it
half yellow and half blue then done!