1 1 Classroom Presenter 3 Richard Anderson Ruth Anderson Dept of Computer Science & Engineering...
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Classroom Presenter 3
Richard Anderson
Ruth Anderson
Dept of Computer Science & Engineering
University of Washington
Demo
2
Instructor Interface
3
Student Activities Demo
1. Student machines receive copy of instructor slides
2. Students complete the activity by annotating slides with ink or text
3. Students submit their responses to the instructor
44
Draw a picture of something from your field of engineering:
To submit your picture, press the button
Student Activity
5
Student Attention vs. Time
Level of Attention
10 20 30 40 50 60 Time
Student Activity
Find the Runtime of Kruskal’s void Graph::kruskal(){
int edgesAccepted = 0;
DisjSet s(NUM_VERTICES);
while (edgesAccepted < NUM_VERTICES – 1){
e = smallest weight edge not deleted yet;
// edge e = (u, v)
uset = s.find(u);
vset = s.find(v);
if (uset != vset){
edgesAccepted++;
s.unionSets(uset, vset);
}
}
}
Highlight the Minimum Spanning Tree (MST) (use Kruskal’s Algorithm)
A
C
B
D
F H
G
E
2 2 3
21
4
10
8
194
2
7
Total Cost:
• Now find the MST using Prim’s method.• Under what conditions will these methods give the same result?
Fill in the Runtimes of Dictionary Implementations
Unsorted linked list
Sorted Array
BinarySearch
Tree
AVLTree
Insert
Find
Delete
O(N)
O(N)
O(log N)
O(log N)
Do a Radix SortValues to Sort: 126, 328, 636, 341, 416, 131, 328
0 1 2 3 4 5 6 7 8 9
BucketSort on least significant digit:
0 1 2 3 4 5 6 7 8 9
BucketSort on next-higher digit:
0 1 2 3 4 5 6 7 8 9
BucketSort on most significant digit :
Reading Pipeline Diagrams
1. What cycle is the “add” instruction being fetched in?
2. What is the last cycle where the “or” instruction is active?
3. What happens in cycle 4?
Clock cycle1 2 3 4 5 6 7 8 9
lw $t0, 4($sp) IF ID EX MEM WBsub $v0, $a0, $a1 IF ID EX MEM WBand $t1, $t2, $t3 IF ID EX MEM WBor $s0, $s1, $s2 IF ID EX MEM WBaddi $sp, $sp, -4 IF ID EX MEM WB
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Pedagogical Goals Active learning Classroom Assessment
Determine level of understanding to adjust material
Inclusion of student materials into discussion Diversity of ideas Examples to illustrate points Discussion of misconceptions
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Build the Perfect Coffee Cup
List three desirable properties:1.
2.
3.
Student Activity
1313
What is your favorite animal?
A. dog
B. cat
C. dragon
D. manatee
Quick Poll
1414
Thank You!
For latest downloads, source code, papers, presentations, mailing list:
http://classroompresenter.cs.washington.edu/
Richard Anderson([email protected])
Ruth Anderson([email protected])