A Great free template about connecting dots with lines to fill the grid.
Fill the 4×4 board by connect the dots. Touch and Drag.
You can undo moves, removes lines completely.
You can add as many lines a you want.
It comes with 3, but very easy to add more colours.
Very easy to add in levels by entering a few values into the Levels table.
Includes 5 levels to help learn.