These printable dinosaur connect the dots puzzles are a DINO-mite way to practice number, drawing and coloring skills.

Another useful function is the ability to copy your drawing to another note. If you want to reuse a sketch elsewhere, tap the ...

The same problem can be expressed graphically as follows: Put as many dots (biophysicists) as you wish on a sheet of paper. Draw as many lines (handshakes) as you wish from any dot to any other dot.