Practise Minimum Spanning Tree problems.[br]The graph has edge weights generated randomly, the spread of the weights can be adjusted with the min and max sliders.[br]Click an edge to added to your tree, click again to deselect it.[br]The New button chooses new weights. The Again button allows you to restart with the same values.[br]The worksheet tells you if you have selected a spanning tree, but not if it's the Minimum Spanning Tree. That is for you to decide.