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Lesson Plan
Addition  Add on Number Lines to 20
First (1)  Math
LEARNING TARGET
 Students will be able to identify numbers on a number line.
 Students will be able to use a number line to add numbers to 20.
 Students will be able to solve addition problems involving numbers up to 20 using a number line.
LEARNING PROGRESSION
PREREQUISITE SKILL

EXTENSION SKILL

DURATION
4555 minutes
MATERIALS
 Number lines (enough for each student)
 Whiteboard and markers
 Addition worksheet pack
VOCABULARY
 Add
 Plus
 Sum
 Number line
 Count
TEACHING RESOURCES
CENTERS & TASK CARDS
No Centers or Task Cards Available
IEP GOAL WORKBOOKS
5 AND 1 INTERVENTIONS
No Interventions Available
GAMES
ACTIVITIES
No Activities Available
LESSON INSTRUCTION
INTRODUCTION
 Begin the lesson by reviewing the concept of addition and its symbol, the plus sign (+).
 Explain to students that they will be learning how to use number lines as an addition strategy to add numbers to 20.
 Display a number line and explain what it is used for.
INSTRUCTION
 Demonstrate to the students how to use a number line to add numbers.
 Start with two numbers, such as 5 and 7.
 Show how to find the first number on the number line, and then count up to the second number.
 Then circle the sum on the number line.
 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.
 Provide additional examples and have students practice using number lines 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 a number line to add.
 Encourage students to write the addition sentences for each problem on their worksheet.
INDEPENDENT PRACTICE
 Provide students with another addition worksheet to complete independently.
 Encourage students to use number lines to help them solve the problems.
 Circulate around the room to provide individual support and guidance as needed.
HOMEWORK
 Provide students with an addition worksheet to complete for homework, using number lines to help them solve the problems.
EXIT TICKET
 To assess students' understanding of using number lines as an addition strategy to add numbers up to 20, provide each student with an exit ticket that contains four addition sentences and four corresponding blank number lines.
 Instruct students to solve each addition sentence and draw a corresponding model on the number line provided.
 Collect the exit tickets to quickly assess students' understanding of the concept and identify any areas that may require further instruction or support.
ASSESSMENT
 To assess students' understanding of using number lines as an addition strategy to add numbers up to 20, provide each student with an assessment sheet that contains several addition sentences and blank number lines.
 Instruct students to solve each addition sentence and draw a corresponding model on the number line provided.
 Collect the assessment sheets to evaluate students' understanding of the concept and identify any areas that may require further instruction or support.
CLOSURE
 Recap with the class what they learned in the lesson about using number lines as an addition strategy to add numbers up to 20.
 Encourage students to reflect on how they can apply this strategy 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 using number lines, provide them with more challenging addition problems that involve regrouping or carrying.
 Students can practice adding three or more numbers using a number line.
 Students can create their own addition problems using number lines and exchange with a partner to solve.
INTERVENTION
 For students who struggle with fine motor skills or have difficulty seeing the numbers on the number line, provide them with alternative manipulatives such as magnetic numbers or tactile materials, like foam number blocks or braille number lines.
 Additionally, for students who have difficulty seeing the numbers on the number line, teachers can provide larger or bolder number lines or use a projector to display a larger version of the number line for the whole class.
 Teachers can provide oneonone guidance during independent practice or small group instruction for students who need extra support.
VIDEOS
No Video Available
TEACHING TIPS
 Demonstrate how to use the number line with concrete examples.
 Encourage students to explain their thinking and process when using the number line.
 Provide differentiated instruction for students who may need extra support or challenge.
STUDENT MISCONCEPTIONS
 Confusing the direction to count on the number line.
 Misinterpreting the value of the numbers on the number line.
 Difficulty with translating the number line model to written addition equations.
STANDARD
Common Core Standard:
1.OA.C.5  Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
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