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# Lesson Plan

## Addition - Adding with Cubes to 20

### First (1) - Math

### LEARNING TARGET

- Students will be able to use connecting cube visuals to add numbers to 20.
- Students will be able to apply the commutative property strategy to add numbers to 20.
- Students will be able to solve addition problems involving numbers up to 20.

### LEARNING PROGRESSION

###### PREREQUISITE SKILL

- Students will be able to use 9's domino visuals to add sums up to 18.
- Students will be able to use the commutative property strategy to add two numbers.

###### EXTENSION SKILL

- Students will be able to read and comprehend addition word problems.
- Students will be able to identify the key information in a word problem.
- Students will be able to construct an addition sentence that matches the word problem.

###### DURATION

- 45-55 minutes

###### MATERIALS

- Connecting cubes (at least 50)
- Container to hold connecting cubes
- Whiteboard and markers
- Addition worksheet pack

###### VOCABULARY

- Add
- Plus
- Sum
- Connecting cubes
- Commutative property
- Count

### TEACHING RESOURCES

### LESSON INSTRUCTION

###### INTRODUCTION

- Begin the lesson by reminding students of the concept of addition and its symbol, the plus sign (+).
- Explain to students that they will be learning how to add numbers to 20 using connecting cube visuals and the commutative property strategy.
- Display the connecting cubes and explain that they will be using these to help them add.

###### INSTRUCTION

- Demonstrate to the students how to use connecting cubes to add numbers. Start with two numbers, such as 5 and 7. Show how to build a tower of 5 cubes and another tower of 7 cubes. Then combine the two towers to create a tower of 12 cubes. Write the addition sentence 5 + 7 = 12 on the board.
- Explain to students that they can use this method to add any two numbers up to 20.
- Introduce the commutative property strategy by explaining that it means that the order of the numbers being added doesn't matter. For example, 5 + 7 is the same as 7 + 5. Demonstrate this by building the two towers in the opposite order and still creating the tower of 12 cubes. Write the addition sentence 7 + 5 = 12 on the board.
- Provide additional examples and have students practice using connecting cubes to add numbers up to 20.

###### GUIDED PRACTICE

- Provide students with an addition worksheet containing problems that use numbers up to 20.
- Work through the problems together as a class, demonstrating how to use connecting cubes to add and apply the commutative property strategy.
- Encourage students to write the addition sentences for each problem on their worksheet.

###### INDEPENDENT PRACTICE

- Distribute an addition worksheet to each student to complete independently.
- Encourage students to use connecting cube visuals and the commutative property strategy to help them solve the problems.
- Circulate around the room to provide individual support and guidance as needed.

###### HOMEWORK

- Assign students an addition worksheet to complete at home.
- Encourage students to use connecting cubes and the commutative property strategy to help them solve the problems.

###### EXIT TICKET

- Provide each student with a whiteboard and marker.
- Instruct students to write an addition sentence that uses connecting cube visuals and the commutative property strategy.

###### ASSESSMENT

- Ask students to share one addition problem they solved using connecting cube visuals and the commutative property strategy.
- Use their responses to assess their understanding of the concepts and strategies covered in the lesson.

###### CLOSURE

- Recap with the class what they learned in the lesson about adding numbers up to 20 using connecting cube visuals and the commutative property strategy.
- Encourage students to reflect on how they can apply these strategies in future math lessons and in everyday situations.
- Provide positive reinforcement to the class for their hard work and progress throughout the lesson.

###### EXTENSION

- For students who have mastered adding numbers up to 20, provide them with more challenging addition problems that involve regrouping or carrying.
- Students can play games that involve adding numbers up to 20, such as "Around the World" or "Math War."
- Students can create their own addition problems using connecting cubes and exchange with a partner to solve.

###### INTERVENTION

- For students who struggle with fine motor skills or have difficulty manipulating the connecting cubes, provide them with larger or easier-to-grasp manipulatives.
- For students who need extra support, provide them with additional practice problems and one-on-one guidance during independent practice.
- For students who need additional reinforcement, provide them with visual aids, such as posters or anchor charts, that illustrate the commutative property strategy and connecting cube visuals.

###### VIDEOS

No Video Available

### TEACHING TIPS

- Provide plenty of opportunities for students to practice using connecting cubes and the commutative property strategy.
- Encourage students to explain their thought process when solving addition problems using these strategies.
- Use real-life scenarios to help students understand the relevance and importance of addition skills.

### STUDENT MISCONCEPTIONS

- Students may struggle with the concept of regrouping or carrying when adding larger numbers.
- Students may confuse the commutative property strategy with the associative property.
- Students may have difficulty visualizing larger numbers using connecting cubes.

### STANDARD

##### Common Core Standard:

1.OA.C.6 - Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction.

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