If you come to a word you do not know, analyze the parts.
| invent base word | + | -or suffix | = | inventor |
The base word invent means “to make something for the first time.” And the suffix -or means “the person who does the action.” So, an inventor is a person who makes something for the first time.
Analyze Suffixes Work with a partner. Find each word below in the selection. Read the sentence. Use the chart to analyze the word parts and figure out the meaning of each word.
| Suffix | Meaning |
|---|---|
| -al | relates to |
| -er / -on | person or thing that does the action |
| -ity | full of |
| -er, -or | the quality of |
| -ize | to make |
| -less | without |
| -tion / -ion | the act or state of |
HEALTH & SCIENCE
1 Use What You Know Josh Parsons invented a catch and throw device for a boy with amputated arms.
• How do bones and muscles work together to help your arm move?
• Look at how your arm moves. What do you notice?
2 Research and Make a Diagram Research how your arm works.
Use a search engine to learn how your arm’s bones and muscles work. Type the words arm, bone, and muscle.
Internet InsideNG.comUse the information to make a diagram. Show the bones and muscles. Add labels.
3 Give a Presentation Present your diagram to a small group. Speak slowly and clearly. Make sure listeners can understand any new terms.