Having Fun with Math using Magnetic Force

1
Having Fun with Math using Magnetic Force

• Fellow Shelly Bursick
• Teacher Dianne Gann

2
Inquiry

• What do you think today's topic is about?
• What do the objects hanging around the classroom
  have in common?
• Who can tell me what relationship these items
  have with our previous lesson?

3
Previous Class Review

• We found that Magnets
• Have many different shapes and sizes.
• Have a north and south pole. (If two north poles
  of a magnet touch they will repel. )
• They will act on most metallic objects with an
  attractive force.

4
Activity Review Testing the force of a Magnet
Magnetic strength

• Activity Fishing for Clips
• Materials
• 2 Paper bags
• Fishing line
• Fish (Paper clips) 36 small 36 large
• Procedure
• In one paper bag put small paper clips and put
  the large paper clips in the other.
• Fish five time from each bag and record the catch.

5
Fishing for Clips Results
Sm.Fish Team 1 Team 2 Team 3 Team 4 Team 5
1st 18 22 21 17 20
2nd 25 18 17 19 21
3rd 16 21 15 14 18
4th 19 16 12 20 15
5th 29 15 29 25 18
Lrg.Fish Team 1 Team 2 Team 3 Team 4 Team 5
1st 25 10 17 15 11
2nd 16 3 10 7 8
3rd 12 14 10 11 9
4th 8 16 10 9 15
5th 22 21 11 18 20
6
Calculation

• 1. Calculate the Average or Mean The mean tells
  you the number of fish caught and divides the
  total number of catches equally.
• 2. Create a Graph for the data.
• Put the trials on the x-axes and the average
  number of fish caught by the teams on the y.

7
Averages for Fishing for Clips data
Team Trial Small Fish
1 21
2 18
3 19
4 19
5 18
Team Trial Large Fish
1 15
2 13
3 12
4 12
5 13
8
Example Graph
9
Evaluate Data

• Did you find it helpful or even easier to examine
  the data when we used averages?
• Do the graphs indicate which fish was caught the
  most?
• Do you think if we used three magnets we would
  catch three times as many fish?

10
Review of 2nd ActivityMagnets Strength

• Activity Fishing for Clips Part two
• Materials
• Paper bag
• Fishing line
• Fish (Paper clips) 36 small 36 large
• Procedure
• In the paper bag put the small and large paper
  clips.
• Fish five time from the bag and record the number
  of small and large fish caught and then record
  the weight of the entire catch.

11
Calculations

• 1. Calculate an Average.
• Add up your trials for the small fish and record
  this where it says total. Repeat this for your
  large fish and the weight. Now using your totals
  take the average for each of the columns in your
  tables.
• 2. Find the Median
• The median is the middle number when each
  catch is put into numerical order.
• 3. Locate the Mode
• The mode is the number of fish caught that
  occurs the most.

12
Evaluate data

• Which team caught the most large or small fish?
  (Did this team also have the greatest weight?)
• Which size was caught the most, the large or the
  small?
• What method did you use to catch the fish?

13
Create a Graph

• Graph procedures
• The teams trials will be represented on the
  x-axes. So as an example, Team 1 is first entry
  on the x-axes and Team 2 the second and so on.
• The teams averages will be represented on the y.

14
Sample Graph
15
Review of Graph

• There where many factors we considered when
  graphing our data.
• Is there any conclusion we can draw from our
  graph?
• Do you see a correlation between weight and the
  number of large clips caught?
• Is there any size that is caught the most? (why
  do you think this is?)

16
Quiet time to reflect

• Each of you need to take your table work sheets
  and flip them over. On the back of the work sheet
  I would like you to write down a paragraph about
  the topics we covered today.
• Keep in mind the math we used and how we
  applied this to our magnet activities.