2. Imagine for Design #1
• Idea #1
• Our materials are newspaper and sand and rocks.
• We need 1 unit of sand and rocks and 2 units of
newspaper.
• The advantages of this idea is that rocks and sand
can get really hot. Both materials have a low
environmental impact and are great insulators.
• The disadvantage of this idea is that the newspaper
isn't the best insulator of heat.
Monday, May 20, 13
3. Imagine for Design #1
• Idea #2
• Our materials are cotton balls and cloth.
• We need 1 unit of cloth and 2 units of cotton balls.
• The advantages of this idea is both cotton and
cloth are great insulators of heat.
• The disadvantages of this idea is that cloth does
have a good amount of environmental impact.
Monday, May 20, 13
6. Plan for Design #1
Material Unit
We will use the
material by
Newspaper 2 Fold it
Rocks and Sand 1 Leave it how it is
Monday, May 20, 13
7. Impact Score for Design #1
Design #1 Reduce
Natural or
Processed
Reuse Recycle Total Points
Rock and
Sand
1 Units Natural No Yes 0
Newspaper 2 Units Processed Yes Yes 3
Our total impact score is 3 points.
Monday, May 20, 13
8. Solar Oven Testing in the Sun
Time Temperature
0 minuets 25°c
5 minuets 43.5°c
10 minuets 46.3°c
15 minuets 54.1°c
20 minuets 57.4°c
25 minuets 60.4°c
Monday, May 20, 13
9. Solar Oven in the Shade
Time Temperature
1 minuet 50°c
2 minuet 42.7°c
3 minuet 38.1°c
4 minuet 36.2°c
5 minuet 35.5°c
6 minuet 34.4°c
Monday, May 20, 13
10. Create for Design #1
• Our heat score is our solar oven maximum
temperature subtracted from the control oven:
60-55=5
• Our time score is the number of minuets it took
to cool down which was 6 minuets.
• Our total impact score was 3 points.
• Our total score for the solar oven was 8.
5+6-3=8
Monday, May 20, 13
11. Improve for Design #1
• The total score for our first solar oven was 8 points.
• The parts of our solar oven design that worked well
were the rocks and sand because it gave off the most
heat.
• The parts of our solar oven design that did not work well
were the newspaper because it made shade in the box.
• We are going to try to improve our heat score.
• We will improve our heat score by taking out the
newspaper and adding cloth because cloth is better
insulator than newspaper.
Monday, May 20, 13
14. Plan for Design #2
Materials Units
How will you use the
materials?
Cloth 2 Cut it
Sand and Rocks 1 Leave it how it is
Monday, May 20, 13
15. Impact Score for Design #2
Design #2 Reduce
Natural or
Processed
Reuse Recycle Total Points
Cloth 2 units Processed Yes No 3 points
Rocks and
Sand
1 unit Natural No Yes 0 points
Total Impact Score is 3.
Monday, May 20, 13
16. Solar Oven Testing in Sun
Time Temperature
0 min. 16°c
5 min. 29.8°c
10 min. 31.7°c
15 min. 34.2°c
20 min. 36°c
25 min. 37.6°c
30 min. 39°c
Monday, May 20, 13
17. Solar Oven Testing in Shade
Time Temperature
1 min. 32°c
2 min. 28.6°c
3 min. 25.4°c
4 min. 23.2°c
5 min. 21.9°c
6 min. 20.9°c
7 min. 20.4°c
Monday, May 20, 13
18. Create for Design #2
• Our heat score is our solar oven maximum
temperature subtracted from the control oven:
39-41= -2
• Our time score is the number of minuets it took
to cool down which was 6 minuets.
• Our total impact score was 3 points.
• Our new total score for the solar oven is 1.
Monday, May 20, 13
19. Reflection
• Our improved design didn't work better because we
were trying to improve our heat score but did not get
close to the last heat score. The material we changed
was the newspaper for cloth. We thought that dark
cloth would be a better insulator because when you
wear dark clothes you get hot.
• If we could improve this design again we would take
out the cloth and put in more newspaper because on
our design #1 newspaper was a better insulator of
heat.
Monday, May 20, 13
