The purpose of this article is to _____.

• describe all the steps in 3-D printing.
• show how 3-D printing was invented
• explain how 3-D printing helped a dog
• convince readers to try 3-D printing

In the article, the word designed means _____.

• drew or planned
• purchased
• borrowed
• saw or noticed

Which detail best shows how 3-D printing is different from regular printing?

• "Finally, she came up with a curved design..."
• "They were afraid of the cart."
• "His owners got him a wheeled cart."
• "...it uses materials like plastic and metal."

Derby's owner called the printed legs a "winner" mainly because _____.

• the legs were cheap
• Derby won a race
• Derby ran around on the legs right away
• she was easily able to print the legs herself

In “Paw Prints,” which statement about Derby’s front paws is true?

• They were hurt in an accident.
• He was born without them
• They were longer than usual.
• They were different lengths.

How did Tara Anderson help Derby?

• She took Derby on long walks.
• She made the first-ever 3-D printed dog legs for him.
• She made a wheeled cart for him.
• She made prosthetic legs by hand for him.

Compared with prosthetic parts made by hand, 3-D printed ones ____.

• are cheaper
• take longer to make
• are less comfortable
• are harder to use

According to the article, which other animals has 3-D printing helped?

• turtles
• rabbits
• sharks
• elephants

Technology is the use of ____ to solve a problem.

• ink and paper
• companies
• medicine
• science

The author mentions hooves, beaks, and wings to give examples of _____ .

• Tara Anderson's new projects
• body parts that 3-D printers cannot yet make
• body parts that have been 3-D printed