Words are made of letters
Why?
A word is a group of letters with a space on each side.
The tiles D-O-G slide together into one word and a gap opens before the next word.
Press the button to slide the letters together into words.
Loading the 3D picture.
Drag the picture to look around.
Counting words on a sign: STOP has one word, PUSH THE DOOR has three.
Interactive labs
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