Lesson Plan
Crack the Code: Word Problems Plan
Students will decode word problems by identifying key operation phrases and learn to translate text into corresponding math operations.
Decoding word problems improves critical thinking and math literacy, empowering students to solve problems confidently.
Audience
2nd Grade
Time
30 minutes
Approach
Interactive, step-by-step decoding with guided practice.
Materials
Prep
Lesson Preparation
5 minutes
- Review key operation phrases and the examples provided in the Operation Phrase Chart.
- Ensure the interactive whiteboard is set up as per the Interactive Whiteboard Setup Guide.
- Familiarize yourself with the step-by-step instruction guide for this lesson.
Step 1
Warm-Up and Introduction
5 minutes
- Greet students and briefly introduce word problems.
- Ask students if they know phrases like 'more than' or 'less than' and what they might mean.
Step 2
Modeling the Decoding Process
8 minutes
- Display a sample word problem on the interactive whiteboard.
- Read it aloud and highlight key operational phrases.
- Explain which math operation corresponds to each phrase.
Step 3
Guided Practice
8 minutes
- Present 2-3 word problems on the board.
- Ask for student input identifying key phrases and corresponding operations.
- Discuss and verify responses as a group.
Step 4
Independent or Group Activity
3 minutes
- Provide a quick activity where students work in pairs to identify operation phrases from a short word problem.
- Monitor and offer support as needed.
Step 5
Closure
1 minute
- Recap the lesson by summarizing how identifying phrases can guide solving word problems.
- Answer any final questions.

Slide Deck
Crack the Code: Word Problems
Welcome 2nd Graders! Today we are going to decode word problems and learn how to pick out clues that tell us which math operations to use.
Introduce the lesson by welcoming the students. Explain that today, they'll learn how to crack the code behind word problems by identifying key operation phrases.
Lesson Objective
Identify key operation phrases in word problems
Translate these phrases into math operations.
Let's build stronger problem-solving skills together!
Share the objective of the lesson and why it's important. Keep the language simple and engaging.
Warm-Up: What Do These Phrases Mean?
• 'More than' ⟶ Addition
• 'Fewer than' ⟶ Subtraction
• 'Equal to' ⟶ Equality
Can you think of any other phrases?
Begin with a warm-up by asking the students if they know phrases such as 'more than' or 'less than'. Encourage discussion.
Modeling the Decoding Process
Example Word Problem:
"Tom has 3 apples and gets 2 more from a friend."
Key Phrase: "gets 2 more" ⟶ Addition
Display a sample word problem on the board. Go over it step-by-step emphasizing the phrasing that cues each math operation.
Guided Practice
Let's solve together!
- "Sara had 5 candies and she gave 2 to her friend."
- "There were 4 birds in a tree and 3 flew away."
Guide the class through a few additional examples and ask for volunteer input. Make it interactive.
Independent/Group Activity
Work in pairs to identify operation phrases in a short word problem.
Remember: Look for clues like 'more than', 'gave', or 'left'.
Instructions for the paired activity. Remind students to work together and help each other.
Closure
Today we learned how to decode word problems by spotting key phrases. Great job everyone!
Any questions before we finish?
Summarize the lesson content. Ask for any final thoughts or questions from students.

Worksheet
Operation Phrase Practice
In this worksheet, you will practice identifying key operation phrases in word problems. Read each problem carefully and underline or circle the phrase that tells you which math operation to use. Then, write down the operation you think the phrase represents.
Example
Word Problem: "Lucy had 4 balloons and got 3 more from her friend."
Key operation phrase: "got 3 more"
Operation: Addition
Practice Problems
1.
Word Problem: "Max had 6 cookies and he gave 2 to his sister."
Identify the key phrase that tells you which math operation to use:
Operation:
2.
Word Problem: "There were 8 birds on a tree, and 5 flew away."
Identify the key phrase that helps you decide what to do with the numbers:
Operation:
3.
Word Problem: "Emma has 7 pencils, and she found 3 more in her drawer."
Which phrase shows the math operation you need to perform?
Operation:
4.
Word Problem: "There were 10 apples on the tree and 4 apples fell down."
Underline the words that tell you how to solve the problem:
Operation:
Great job! Continue practicing by reading each problem carefully and remembering the key operation phrases.


Activity
Phrase Detective Game
In this fun and interactive game, students become 'Phrase Detectives' as they search for clues in word problems. Working in pairs or small groups, they will match key operation phrases with the correct math operations.
Instructions:
-
Form Groups:
- Divide the class into small groups or pairs.
-
Distribute Materials:
- Provide each group with a set of cards or a worksheet that includes various word problems and a list of operation phrases (e.g., "more than", "gave away", "found/received").
- You can use the Operation Phrase Practice worksheet for reference if needed.
-
Detective Work:
- Each group reads a word problem carefully.
- They discuss and underline or highlight the phrase that indicates the math operation to use.
- Then, they match the identified phrase with the correct operation (e.g., "more than" corresponds to Addition, "gave away" corresponds to Subtraction).
-
Game Challenge:
- After each group has worked through their set of problems, bring the class together.
- Ask each group to share one word problem and explain how they identified the key phrase and matched it to the correct operation.
- Encourage other groups to ask clarifying questions or add observations.
-
Review and Reflect:
- Once all groups have presented, ask the students to reflect on how identifying these phrases helped them understand the word problems better.
- Have a brief class discussion by asking questions like:
- "What clues do you look for when reading a word problem?"
- "How did you decide which operation to use?"
- "What clues do you look for when reading a word problem?"
-
Closing:
- End the session by congratulating all of your 'Phrase Detectives' for their great teamwork and problem-solving skills!
Enjoy the game and remember: every word is a clue to solving the mystery of the math problem!

