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Lesson 3

1. Lesson 3

1.1. Discover

Mathematics 30-3 Module 2

Module 2: Number

 

Discover
 

At first glance, it may seem like the strategies appropriate for solving puzzles will be unique to each type of puzzle. However, it turns out that there are a number of strategies that can be used for many different types of puzzles.

 

Try This 1

 

Try to solve the following puzzles. You may find it helpful to work with a partner.

  1. This is a picture of a grandfather clock showing part of the gear mechanism. One complete gear is visible in the middle, with a partial one above and a partial one below.
    Gears

     

    A home-made grandfather clock has five gears connected vertically. If the first (top) gear rotates in a clockwise direction, in which direction does the fifth (bottom) gear rotate?
  2. Chickens and Pigs

     

    Andy and Kai went out to a farm on Saturday where they saw chickens and pigs. Andy said that he counted 14 animals altogether. Kai said she counted 48 legs. How many chickens were there, and how many pigs were there?

     

    This is a photo of some brown pigs and black chickens.
    iStockphoto/Thinkstock

course folder Save your responses in your course folder.

 

Share 1

 

Share your solution strategies (or attempts if you were not successful) with a partner. How were your strategies similar? How were they different?

 

course folder If required, place a summary of your discussion in your course folder.