Magic Word Builders: Adding Endings

Hello! Today, we are going to learn how to become Word Builders. We can take a simple word (we call this a root word) and add a few letters to the end to change what it means. These special endings are called suffixes.

The best part about this lesson? For these words, you don't have to change the root word at all! You just stick the ending on, and you’re finished. It’s as easy as using glue!

What is a Suffix?

A suffix is a group of letters that we add to the end of a word. In this chapter, we are looking at four very important ones:

1. -ing
2. -ed
3. -er
4. -est

Don't worry if this seems tricky at first. Just remember: in this chapter, the root word stays exactly the same!

Adding -ing and -ed

We usually add these endings to verbs (doing words).

The -ing ending

We use -ing when something is happening right now.
Example: If you are jumping up and down at this moment, you are jumping.

\( \text{jump} + \text{ing} = \text{jumping} \)

The -ed ending

We use -ed when something has already happened in the past.
Example: If you finished your walk yesterday, you walked.

\( \text{walk} + \text{ed} = \text{walked} \)

More examples with no root change:
• Play becomes playing or played.
• Hunt becomes hunting or hunted.
• Buzz becomes buzzing or buzzed.

Quick Tip!

Sometimes -ed sounds like a /t/ (like in jumped) or a /d/ (like in played). Even if it sounds different, we still usually spell it with -ed!

Adding -er and -est

We often add these endings to adjectives (describing words) to compare things.

The -er ending

We use -er to compare two things, or to describe someone who does an action.
Example: If a car is fast, but a plane is even more fast, the plane is faster.

\( \text{fast} + \text{er} = \text{faster} \)

The -est ending

We use -est to describe the "most" of something.
Example: If you are the most small person in the class, you are the smallest.

\( \text{small} + \text{est} = \text{smallest} \)

More examples with no root change:
• High becomes higher or highest.
• Long becomes longer or longest.
• Loud becomes louder or loudest.

Common Mistakes to Avoid

When you are writing these words, keep an eye out for these "oops" moments:

• Don't forget the root: Make sure you spell the whole root word first before adding the ending. (Write wait then add ing to get waiting).
• No extra letters: For the words in this chapter, you don't need to add or take away any letters from the root word. Just join them together!

Did you know?

The word -er can also turn a "doing word" into a "person word." For example, someone who sings is a singer!

Quick Review Box

• Root word: The main word before we add an ending.
• Suffix: The ending we add (-ing, -ed, -er, -est).
• No change: Just stick the suffix onto the end of the root word.
• Check your work: Read the word without the suffix. Does the root word look right? If yes, you’ve done it!

Note: If a root word ends in a single consonant (like 'hop') or an 'e' (like 'bake'), the rules change! You can learn about those in our other chapters: "Adding suffixes to words ending in -y" and "Adding suffixes to words ending in -e and to short words."

Let's Practice!

Try to say these word sums out loud:
1. \( \text{stick} + \text{ing} = \dots \) (sticking)
2. \( \text{short} + \text{est} = \dots \) (shortest)
3. \( \text{help} + \text{ed} = \dots \) (helped)
4. \( \text{cold} + \text{er} = \dots \) (colder)

Great job! You are now a Suffix Superstar!