Decision Matrix

Ideas

Availability of materials

Ease of Use Able to be constructed easily

Hypothesized effectiveness

Percent of Recycled materials used Totals

4 3 4 3 3 17

4 3 4 4 3 18

5 2 5 3 4 19

1 2 3 4 5Availability of materials

All items seldom get throw away

25% of the items are frequently thrown away.

Half of the items are frequently thrown away.

75% of the items are frequently thrown away

All items are used and thrown away very often, easy to find.

Ease of use. Needs to be refilled or fixed at least every day

Needs to be fixed or refilled every 2 days.

Needs to be fixed or refilled every 3 days

Needs to be fixed or refilled every 4 days

Simplistic design. Need to refill or fix it less than every 5 days.

Able to be constructed easily

75+% is done out of class time, lots of help needed.

60% is done out of class

Half of it is able to be done in class, some help needed.

Can be done mostly in class, minimal help needed

All in class, no outside time and no help needed.

Hypothesized effectiveness

Proven through calculations not likely to work

Apparent flaws in the design

According to calculations it is likely to work

Almost guaranteed to work

No flaws found in design

Percent of Recycled materials used

<50% recycled 50-65% recycled

66-82% recycled 83-99% recycled

100% recycled