
Chapter 1: Patterns in Mathematics
Just How Big Are Your Feet?
INTRODUCTION
Animal feet or paws are often much different in size and shape. This is how trackers can figure out which animal made tracks that they have found.
THE TASK
You will use your own foot as a reference to describe the feet or paws of animals.
THE PROCESS

Make a track: Wet your foot, and press it on the floor. Measure the length and the width of the track in whole centimetres.


Use a Web search engine to find the foot or paw measurements of animals you’re interested in. (Or, you could measure tracks you find in mud or snow around your home or school.) If you use a Web search, you could try searches like “polar bear, track size” or “polar bear, paw size”, or “polar bear, paw length”. You can use the feet or paws of mammals, bird, reptiles, or amphibians.

 Compare each foot or paw to yours using an expression. For example, if your foot is 22 cm long, an expression for the length of the polar bear paw is l + 8. Record your expressions for length and width.
 If you’re not sure about the length or width of a paw or foot, but you have seen a photo and you think you can make a pretty close estimate, record the measurement like this: 20 cm (est.), to show it is an estimate.
 Just how big are your feet? Do they seem larger or smaller than those of most animals?
RESOURCES
Websites:
Any search engine
Files:
Comparing Feet and Paws
Materials:
pencil
ruler
ASSESSMENT
Criteria 
Work meets standard of excellence 
Work meets standard of proficiency 
Work meets acceptable standard 
Work does not yet meet acceptable standard 
Connections:
Connects mathematical concepts to realworld phenomena 
Makes insightful connections between realworld contexts and mathematical ideas. 
Makes meaningful connections between realworld contexts and mathematical ideas. 
Makes simple connections between realworld contexts and mathematical ideas. 
Makes minimal or weak connections between realworld contexts and mathematical ideas. 
Reasoning:
Makes generalizations 
Comprehensively analyzes situations and makes insightful generalizations. 
Completely analyzes situations and makes logical generalizations. 
Superficially analyzes situations and makes simple generalizations. 
Is unable to analyze situations and make generalizations. 


