Recently published items

No description given

No description given

Fragen zum Abbildungsbegriff / Questions regarding the notion of map between two sets.

Students are shown 4 network diagrams (randomly selected from a pool of 20) and asked to identify which of them are trees.

Students are awarded 1 mark for each correct identification, and lose 1 mark for each non-tree they select.

As the number of trees can change, the number of marks that this question is worth can also change, ranging from 1 to 4.

Students are randomly shown one of two networks. They are shown four sub-networks, and asked to identify which one is a minimum spanning tree for the network. Thus, there are 2 versions of this question.

Students are randomly shown one of 3 networks.

They are given 4 sub-networks and asked to identify which one is a spanning tree

Students are shown one of a disconnected graph, a tree, and a graph containing cycles. They are asked the yes/no question: "Is this a connected graph?"

This question displays one of 6 graphs and asks the yes/no question, "Does this graph contain a cycle"?

This question displays one of 10 graphs. It asks the student to either 

(a) count the vertices, or

(b) count the edges, or

(c) state how many vertices a spanning tree would contain, or

(d) state how many edges a spanning tree would contain, or

(e) state the degree of a selected (randomly chosen) vertex.

Solve for $x$:  $\log_{a}(x+b)- \log_{a}(x+c)=d$