# ice cream

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```							    Problem
Solving – Ice
Cream

Fuller Computer Lab
following Illinois State Goal.

   STATE GOAL 10: Collect, organize and
analyze data using statistical methods;
predict results; and interpret uncertainty
using concepts of probability. 10.C.1b
10.C.2b 10.C.3b Systematically list all
possible outcomes of a simple one-stage
experiment (e.g., the flip of one coin, the
toss of one die, the spin of a spinner).

January 2007   Fuller Computer Lab
Blog:
 Thisproblem is on the Computer Lab
BLOG.
 We are going to write a response in the
comment part of the BLOG.
 The next slide is a rubric for your
response.

January 2007   Fuller Computer Lab
Rubric
Points
Mathematical Knowledge: (Do you know
it?)
I get the right answer, and I label it correctly.
4        I use math words correctly to show I understand how math works.
I compute with no mistakes.

I use most math words correctly. I make small mistakes in computation.
3
I know how to do parts of the problem, but I make major errors in
2        computation and get a wrong answer.

I try to do the problem, but I don’t understand it.
1
I don’t try to answer the problem.
0
January 2007    Fuller Computer Lab
Rubric
Points
Strategic Knowledge:
(How do you plan?)
I find all the important parts of the problem, and I know how they go together.
4        I show all the steps I use to solve the problem.
I completely show pictures, diagrams, models or computation if I use them in my
plan.
I find most of the important parts of the problem.
3        I show most of the steps I use to solve the problem.
I find some of the important parts of the problem.
2        I show some of the steps, but my plan is not clear.
I find almost no important parts of the problem.
1        I show almost none of the steps I use to solve the problem.
I show a plan that does not fit the problem.

0        I don’t show a plan.

January 2007    Fuller Computer Lab
Rubric
Points
Explanation: (Can you explain it?)
I write what I did and why I did it.
4
If I use a drawing, I can explain all of it in writing.
I write mostly about what I did.
3        I write a little about why I did it.
If I use a drawing, I can explain most of it in writing.
I write some about what I did or why I did it but not both.
2        If I use a drawing, I can explain some of it in writing.
I write or draw something that doesn’t go with my answer.
1
I write an answer that is not clear.

0        I don’t explain anything in writing.

January 2007    Fuller Computer Lab
Ice Cream
   An ice cream stand has nine different flavors. A
group of children come to the stand and each
buys a double scoop cone with two flavors of ice
cream. If none of the children choose the same
combination of flavors, and every different
combination of flavors is chosen, how many
children are there? Explain how you got your
answer and why you took the steps you did to
solve the problem.
   FLAVORS
1 Vanilla
2 Maple
3 Chocolate
4 Tiger
5 Raspberry
6 Strawberry
7 Coffee
8 Moon Mist
9 Cherry Vanilla
January 2007    Fuller Computer Lab
What do we know?
 Each child buys a different double
scoop ice cream cone.
 Each cone has two different flavors.
 Every possible combination of
flavors is chosen.
 There are nine flavors of Ice Cream

January 2007   Fuller Computer Lab
What do we need to
do?
How  many children
are there?

January 2007    Fuller Computer Lab
What do we going to do?
 We   know that each child bought a
different two scoop cone.
 All the possible cones were bought.

 We can find out how many different
kinds of cones there are. This will tell us
how many children bought cones.
 We   will explain what we did and
why we did it.

January 2007   Fuller Computer Lab
vanilla, some of the
cones are …
 Vanilla and Maple
 Vanilla and Chocolate

 Vanilla and Tiger

 Vanilla and Raspberry

 Vanilla and …………..

January 2007   Fuller Computer Lab
Blog
 Tell What you know.
 Tell What you need to do.

 List your kinds of cones.

 Tell what you did and why you did it.

January 2007       Fuller Computer Lab

```
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