Spinner Problem Scoring Guide
Scoring Level |
Characteristics |
4 - (Outstanding) |
Response meets 6 out of 7 of these criteria:
- All response areas are filled out
- Figures are drawn and labelled as directed
- Problem statement is reasonable
- Number of valid spinner configurations found is 3 or greater.
- One of the 8 valid spinners has been selected, or one of the
repeated number geometries. (see below)
- All spinners examined are identified correctly as "fair" or "not
fair". Assume a geometry that has no fairness label to be 'fair'.
- A sentence justifying the team selection is present and convincing.
For an "outstanding" rating, the team must write something innovative
or insightful, such as ...
- An explanation why their spinner is more "fun".
(more numbers?)
- Selection of one of the repeated number fair spinners
(see below).
- A recognition of the fact that there must be as many numbers below 4
as there are above it for a spinner to be 'fair'.
|
3 - (Very good) |
Any response that fails at least 2 of the above "outstanding"
criteria, but has no missing essential elements (restatement,
investigation, conclusion)
|
2 - (Good) |
Any response below a "Very Good". This is a response that is missing
one or more essential elements, or did not follow the instructions.
|
The following are ALL of the fair spinners that do not use repeated
numbers, and SOME of the repeated number 'fair' spinners.
Fair spinners (all of
them) | Repeated number
fair spinners (Some of them) |
0 - 4 - 8 | 0 - 0 - 4 - 8 - 9 |
0 - 4 - 9 | 0 - 0 - 8 - 9 |
0 - 8 | 0 - 0 - 8 - 8 |
0 - 9 | 2 - 2 - 6 - 6 |
2 - 4 - 6 | 2 - 2 - 4 - 6 - 6 |
2 - 6 | 0 - 4 - 4 - 8 |
0 - 2 - 4 - 6 - 8 | 0 - 4 - 4 - 9 |
0 - 2 - 4 - 6 - 9 | 0 - 4 - 4 - 8 |
|
Here is the
rule for evaluating whether a spinner geometry is fair:
- There must be as many numbers below 4 as above it.
|
|