Here is the kit of uncolored originals for my Math for seven-year-olds project on Graph coloring, Chromatic numbers, and Eulerian paths and circuits.  Just print, copy each folio double-sided (with correct orientation, the cover is one-sided), fold each folio in half, assemble the folded folios side-by-side, and place into the cover to form your booklet, with a few staples for a binding.  See

Andrej Bauer has assembled the images into a single pdf file:, and filtered the color to black/white to improve printing.
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