Section 1

Read more about barrier-free spaces and ramps on page 25 of Mathworks 11. Focus on the “Math On The Job” section. As you read, think about what

• barrier-free design is
  
  
• safety features a building officer must be familiar with
  
  
• changes might be needed to make a house more functional for someone with a wheelchair

Self-Check 3

1. Refer to your reading on page 25 of the textbook. Richard was asked to inspect a wheelchair ramp. Is the ramp legal? Use calculations and explain your answer. Answer
   
   
2. Go to page 19 of Mathworks 11, and read “Build Your Skills” question 1.
   
   
   1. Calculate the percent grade of the Kootenay Pass in southeastern British Columbia. Answer
      
      
   2. Calculate the percent grade of the Coquihalla Pass in south central British Columbia. Answer
      
      
   3. Which pass is steeper? Explain. Answer
      
      
3. Go to “Build Your Skills” on page 21 of Mathworks 11, and answer question 5. Is Sarah correct, or is Amy correct? Explain why. Support your answer. Answer

It is now time to add new math terms to your Mathematics 20-3: Glossary Terms document.

In this lesson the new term you will add is

• percent grade

At this time, you may want to add the percent grade formula to your Formula Sheet.