Lesson Script: Keywords to Operations

Introduction: Hook and Objective (5 minutes)

(Display Keywords to Operations Slide Deck - Slide 1)

"Good morning, everyone! Today, we're going to become super-sleuths of math. Has anyone ever looked at a word problem and thought, 'Hmm, should I add here, or should I multiply?' It can be tricky, right?"

"Well, guess what? Word problems often hide little clues, like secret messages, that tell us exactly what to do! Today, we're going to learn how to be Keyword Detectives and find those clues to help us decide whether to add or multiply."

(Display Keywords to Operations Slide Deck - Slide 2)

"Keywords are special words in a problem that point us to the correct math operation. Think of them like traffic signs for math – they tell you where to go! By the end of this lesson, you'll be much better at spotting these clues and solving one-step word problems involving addition and multiplication, especially with our 3s and 6s multiplication facts."

Exploring Keywords: Addition (7 minutes)

(Display Keywords to Operations Slide Deck - Slide 3)

"Let's start with addition. When you see certain words, your brain should immediately think, 'Aha! Time to add!' Take a look at these common addition keywords: in all, altogether, sum, total, combined, and, and more than. These words usually mean we are putting groups together to find a grand total."

"Can anyone think of a sentence using one of these words that would make you want to add?"

(Display Keywords to Operations Slide Deck - Slide 4)

"Let's try an example together. Read this problem with me: 'Sarah has 5 red apples and 3 green apples. How many apples does she have in all?'"

"What's the keyword you spot here? Shout it out!" (Pause for responses: 'in all') "Exactly! 'In all' is our big clue. It tells us we need to combine the apples. So, we add: 5 + 3 = 8 apples. Great job!"

(Display Keywords to Operations Slide Deck - Slide 5: Addition Practice!)

"Now, let's try another one on your own. Look at this problem on the slide: 'David has 10 comic books. His friend gave him 7 more comic books. How many comic books does David have in all?'"

"Take a moment to read it. What's the keyword you see? What operation should we use? And what's the solution? Discuss with your partner for a moment, then we'll share!" (Pause for student discussion, then call on students to share. Guide them to identify 'in all' as the keyword, addition as the operation, and 10 + 7 = 17 as the solution.) "Excellent work, detectives!"

Exploring Keywords: Multiplication (3s and 6s) (8 minutes)

(Display Keywords to Operations Slide Deck - Slide 6)

"Now, let's switch gears to multiplication. Just like addition, there are special keywords that tell us to multiply. These often involve finding a total when you have several equal groups."

"Look at these multiplication keywords: groups of, rows of, times, each (when it refers to multiple groups), and product. You'll often see these when you're doing repeated addition, but multiplication is a quicker way to solve it!"

"Today, we're going to pay extra attention to problems where we multiply by the numbers 3 and 6! So keep those facts in mind."

(Display Keywords to Operations Slide Deck - Slide 7)

"Here's our first multiplication challenge: 'A baker made 4 groups of 3 cookies. How many cookies did the baker make?'"

"What keyword jumps out at you in this problem?" (Pause for responses: 'groups of') "You got it! 'Groups of' is a huge multiplication clue. It means we have 4 sets, and each set has 3 cookies. So, we multiply: 4 x 3 = 12 cookies."

(Display Keywords to Operations Slide Deck - Slide 8)

"Let's try another one: 'There are 6 students, and each student has 5 pencils. How many pencils are there in total?'"

"What's the keyword here?" (Pause for responses: 'each') "Excellent! When we see 'each' and we're talking about multiple people or items, it often means we need to multiply. So, 6 students, with 5 pencils each, means 6 x 5 = 30 pencils. Fantastic keyword detective work!"

(Display Keywords to Operations Slide Deck - Slide 9: Multiplication Practice!)

"Okay, detectives, one more practice problem before you tackle your own! Take a look at this: 'A garden has 3 rows of 6 sunflowers. How many sunflowers are there in total?'"

"Read carefully, find those keywords, decide on the operation, and find the solution. Share your thoughts with your partner." (Pause for student discussion, then call on students to share. Guide them to identify 'rows of' and 'in total' as keywords for multiplication, and 3 x 6 = 18 as the solution.) "Wonderful job, everyone!"

Guided Practice: Worksheet Time! (7 minutes)

(Display Keywords to Operations Slide Deck - Slide 10)

"Now it's your turn to put on your detective hats and solve some mysteries! I'm going to hand out a worksheet called the Addition & Multiplication Keyword Worksheet."

"Here's your mission, should you choose to accept it: For each problem, I want you to first read it carefully. Then, find the keywords and underline them. Next, decide if those keywords tell you to ADD or MULTIPLY. Finally, solve the problem and write your answer clearly."

"You'll notice some of the multiplication problems will involve our 3s and 6s facts, so this is a great way to practice those too! Work quietly and independently, but if you get stuck, remember you can always raise your hand and I'll come help you out. Good luck, detectives!"

Review and Cool Down (3 minutes)

(Display Keywords to Operations Slide Deck - Slide 11)

"Alright, Keyword Detectives, pens down! Let's quickly review a couple of the problems from the worksheet. Can someone tell me about problem number 3? What keyword did you find and what operation did you use?" (Call on students to share and discuss briefly, referring to the Worksheet Answer Key if needed for clarity.)

"Great sharing everyone! What's one new keyword you learned today, or one strategy you used to help you decide between adding and multiplying?"

"You all did an awesome job today learning to find keywords in word problems. Remember, those keywords are your secret clues, and they tell you which operation to use. Keep practicing this skill, and you'll be a word problem master in no time!"

Addition & Multiplication Keyword Worksheet

Directions: Read each word problem carefully. Underline the keywords, then write whether you need to Add or Multiply to solve it. Finally, solve the problem!

1. Maria has 7 red balloons and 9 blue balloons. How many balloons does she have in all?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

2. There are 5 groups of 6 students in the art class. How many students are there?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

3. A store sold 12 fiction books and 15 non-fiction books. What is the total number of books sold?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

4. Each box holds 3 cookies. If there are 8 boxes, how many cookies are there altogether?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

5. Tom had 18 marbles, and his friend gave him 6 more. How many marbles does Tom have now?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

6. Mrs. Smith bought 3 packs of stickers. Each pack has 9 stickers. How many stickers did she buy in total?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

7. There are 24 red flowers and 13 yellow flowers in the garden. How many flowers are there combined?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

8. A farmer planted 6 rows of 7 apple trees. How many apple trees did the farmer plant in all?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

9. A recipe calls for 4 cups of flour and 2 cups of sugar. How many cups of ingredients are there altogether?
   
   Keywords: _________________________
   Operation: _________________________
   Solution:
   
   
   
   

10. There are 6 baskets, and each basket has 4 apples. What is the product of the number of baskets and apples?

Worksheet Answer Key

Directions: Review the answers and the keywords identified for each problem.

1. Maria has 7 red balloons and 9 blue balloons. How many balloons does she have in all?
   
   Keywords: in all
   Operation: Addition
   Solution: 7 + 9 = 16 balloons

2. There are 5 groups of 6 students in the art class. How many students are there?
   
   Keywords: groups of
   Operation: Multiplication
   Solution: 5 x 6 = 30 students

3. A store sold 12 fiction books and 15 non-fiction books. What is the total number of books sold?
   
   Keywords: total
   Operation: Addition
   Solution: 12 + 15 = 27 books

4. Each box holds 3 cookies. If there are 8 boxes, how many cookies are there altogether?
   
   Keywords: Each, altogether
   Operation: Multiplication
   Solution: 8 x 3 = 24 cookies

5. Tom had 18 marbles, and his friend gave him 6 more. How many marbles does Tom have now?
   
   Keywords: more
   Operation: Addition
   Solution: 18 + 6 = 24 marbles

6. Mrs. Smith bought 3 packs of stickers. Each pack has 9 stickers. How many stickers did she buy in total?
   
   Keywords: Each, in total
   Operation: Multiplication
   Solution: 3 x 9 = 27 stickers

7. There are 24 red flowers and 13 yellow flowers in the garden. How many flowers are there combined?
   
   Keywords: combined
   Operation: Addition
   Solution: 24 + 13 = 37 flowers

8. A farmer planted 6 rows of 7 apple trees. How many apple trees did the farmer plant in all?
   
   Keywords: rows of, in all
   Operation: Multiplication
   Solution: 6 x 7 = 42 apple trees

9. A recipe calls for 4 cups of flour and 2 cups of sugar. How many cups of ingredients are there altogether?
   
   Keywords: altogether
   Operation: Addition
   Solution: 4 + 2 = 6 cups

10. There are 6 baskets, and each basket has 4 apples. What is the product of the number of baskets and apples?
    
    Keywords: each, product
    Operation: Multiplication
    Solution: 6 x 4 = 24 apples