ice cream

							    Problem
Solving – Ice
      Cream


    Fuller Computer Lab
                This activity addresses the
               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 give a wrong answer or only part of the 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
                So, if we start with
               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
        In        your comment:
                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