Archive for the 'Barge Building' Category

New Barge Building Photos

Click on the image to see the photos from today’s Barge Building finals.

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Final Barge Building Results

Here are the final results for Barge Building for the trial event:

Num. Members Pennies Held Predicted Amount Score
7 JL JA 86 80 854
13 RR JF 75 75 750
16 AT 70 50 680
2 IA TS 66 70 656
3 NR AW 63 69 624
10 WC CK 61 56 605
22 BC 60 37 577
15 PS 58 66 572
14 GS 48 50 478
20 HS 50 20 470
8 AS TC 36 45 351
1 KL EG 33 45 318
6 CE VF 24 17 233
12 AM LR 24 15 231
18 JN 24 37 227
9 CE RK 24 68 196
11 MH DG 18 15 177
4 KK JK 15 33 132
5 WH BW 12 23 109
23 KL 13 38 105
17 TB 4 18 26
21 CB 7 66 11

Barge Building Trial, Round 1

Here are the results from the first round of barge building. The rest of the competitors will compete on Wednesday.

Num. Members Pennies Held Predicted Amount Score

16

AT

70

50

680

2

IA TS

66

70

656

3

NR AW

63

69

624

22

BC

60

37

577

14

GS

48

50

478

8

AS TC

36

45

351

1

KL EG

33

45

318

6

CE VF

24

17

233

18

JN

24

37

227

4

KK JK

15

33

132

5

WH BW

12

23

109

23

KL

13

38

105

17

TB

4

18

26

Make up for Barge Building

There will be a make up time for Barge Building only. If you are not able to make it on Monday after school, I will run a make up event on Wednesday during lunch in my room. Bring your lunch and be ready to build your barge!

Buoyancy

The key to understanding Barge Building is understanding buoyancy. Try to read and understand this key point. This is taken from http://www.fsea.org/pdf/DB1%20Das%20Boatpdf.PDF

Buoyancy: When the density of an object (boat + air + marbles) approaches that of water, it will sink. The boat structure must be rigid enough to maintain a shape that traps air and keep the density down as it is filled with marbles. The higher the volume of the structure, the more air and marbles it will hold.

Students should study which shape will displace the largest volume of water and how this shape can be made rigid and strong enough to hold a lot of [weight].

Interesting Barges

An interesting design for building barges. Does it work? You’ll have to try …

Click here

And here’s something else – look at the different shapes of the hull (bottom) of the boat. Could you try these different shapes with aluminium foil? Which will hold the most weight?

Barge Building

boat.jpgI had a chance to try barge building yesterday with a couple of kids who stopped by my classroom after school. Like all of the events, this one was challenging. My best boat only held 18 pennies. Someone told me on their log that their boat held 78 pennies! I wonder if they were using the same kind of aluminium foil as I was.

I was using Reynolds aluminum foil that I bought at the dollar store. It seems to be a lot thinner than the kind I have at home in my kitchen. And definitely the thickness of the aluminum foil matters, especially when you only have a 15cm square to work with. It was a lot smaller than I thought it was going to be!

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