McGraw-Hill Mathematics: Grade 3, Chapter 12

Name:                                                       Date:                           

Canine Construction

Dog House Construction
http://www.mikestrong.com/doghouse/index.html

Look closely. How many shapes can you see?

• Click the first picture in the first row. Answer Question 1 on your activity sheet.
• Click Phases of Construction. Find the picture showing just one angle. Answer Question 2.
• Scroll down to see the other pictures. Read about the construction.
• Click pictures to enlarge. Then click the Back arrow. Answer Questions 3 and 4.
• At the top of the page, click The Gallery. Click pictures to enlarge. View the pictures to answer the questions. Then click the back arrow to view other pictures.
• Finish your activity sheet.

Answer the questions below using the pictures on the Web site.

1. In the first picture, what two plane figures do you see?
   
                                                                                       
   
   
2. Look for the picture of an angle. Is the angle a right angle, less than a right angle or greater than a right angle?
   
                                                                                       
   
   
3. Look for a picture showing the frame of the doghouse. Which part of the doghouse shows triangles?
   
                                                                                       
   
   
4. Which parts of the doghouse show parallel lines?
   
                                                                                       
   
   
5. In The Gallery, look at the first doghouse in the first row. What shape is one of the purple boards on the front of the roof?
   
                                                                                       
   
   
6. Look at the fourth doghouse in the first row. Which part of the doghouse is a closed figure, but not a polygon?
   
                                                                                       
   
   
7. Look at the seventh doghouse in the first row. Describe where you see a trapezoid.
   
                                                                                       
   
   
8. What other plane figures do you see in the seventh picture?
   
                                                                                       
   
   
9. What 3-dimensional figures can you identify in the seventh picture?
   
                                                                                       
   
   
10. Look at the first doghouse in the second row (doghouse #9). Name all of the plane figures that you can find.
    
                                                                                        
    
    
11. The builder of doghouse #9 said that the floor is 4 ft by 4 ft. Draw a model of the square floor. Show the feet. What is the perimeter of the floor?
    
                                                                                        
    
    
    
    

Math at Home

Today I explored a Web site about building a doghouse. I found that a doghouse with a 4 ft by 4 ft floor has the perimeter of                                   feet.

You can find out more about this topic by asking your teacher or parents to show you other Web sites.