Thursday, November 24, 2011

Math 9 Toy Project

Special Christmas Project

Goal of Project:

  • To teach a mathematical concept through the design and construction of unique wooden toys to be given to families with young children for Christmas.
  • To make a real-life connection for the math students; learn surface area while doing something nice for someone else.

Who is involved?

  • It is a collaborative project that involves Mrs. Berrisford’s Math 9 students and some of Mr. Brodt’s senior Woodworking students.

Background information about the project:

  • I came up with the idea while I was planning the chapter one math unit. My initial goal was to incorporate an interesting, meaningful project tying in the concept of surface area. I used a mind map to explore possible project ideas. Then it came to me - the timing was perfect to tie in Christmas – my favourite holiday! Yippee. The project evolved from there…

The “math” involved (brief description):

  • Students used grid paper to design and label measurements (either to scale or using a scale factor). We also discussed imperial versus metric system.
  • Once the toys were made, the math students measured the actual dimensions using rulers and/or calipers.
  • The students then calculated the surface area of the composite figure (the toy). They also determined the cost of painting the toys.

Our class will also be adding dry food items and goodies to the Christmas baskets! I am excited for the completion of this special Christmas math project!

Wednesday, November 23, 2011

Math 9: Rational Numbers



As an alternative to individual work, the students were put into groups of four for a game. Each student was given a piece of paper and asked to divide it into 8 sections (they could choose to fold the paper however they wanted). Then a problem was put on the overhead and every student wrote the problem down on their paper individually but they were all expected to collaborate in how they solved it. The whole group then had to agree on a final answer at which point one appointed student would raise their answer in the air and ask the teacher to check it. If the answer was correct the group would be allowed to advance to the next problem (the students worked through a total of 8 problems).

The whole thing is a competition (to see which group can successfully complete the 8 problems) and it engages students who like to compete but it also takes the risk away from less confident students as they are allowed to work through their answers with other students, and they don’t have to hold up their answers by themselves. This same game format could be used for various topics.