Lesson Plan Template
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Grade
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Subject
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Section
First
Math
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Competency
Addition word problems up to 10 (1)
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Aligned Standards
Operations and Algebraic Thinking
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Strand
1.OA.A.1
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Vocabulary
- Addition: The process of finding the total or sum by combining two or more numbers.
- Manipulatives: Physical objects that help students visualize and understand mathematical concepts.
- Word Problem: A math problem written in words, requiring the use of reasoning to solve.
Complete Addition Word Problems (sums up to 10)
Prerequisite Skill
Materials and Preparation
- Connecting cubes
- Counting links
- Whiteboard and markers
- Number charts or number lines (optional, for support)
Learning Objectives
- Students will solve addition word problems using manipulatives.
- Students will demonstrate an understanding of the concept of addition as combining and accumulating numbers.
- Students will communicate their mathematical thinking through verbal and written forms.
Introduction
Introduce the lesson by discussing the importance of addition in everyday life, such as combining amounts of ingredients in cooking or total spending on a shopping trip. Show an example problem: "Sam has 2 marbles, and his friend Mia gives him 3 more. How many marbles does Sam have now?" Demonstrate solving this problem using connecting cubes, showing 2 cubes for Sam's marbles and adding 3 more cubes for the marbles Mia gives him.
Explicit Instruction/Teacher modeling
Explain that today, students will learn how to solve word problems using manipulatives. Highlight the steps involved:
- Read the problem.
- Determine what the problem is asking.
- Use cubes or links to represent the problem.
- Combine the groups to find the total.
- Write the answer.
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Guided Practice
Present the sample problem about Ben and Sara. Read the problem aloud and model how to solve it using connecting cubes:
- Ben got 4 points. (Show 4 cubes)
- Sara also got 4 points. (Show another set of 4 cubes)
- Count all cubes together to find the total. (Combine and count the cubes, showing 8 cubes in total) Ask students to repeat a similar problem in pairs, guiding them through each step and circulating to provide assistance.
Independent Practice
Provide students with a worksheet containing similar addition word problems. Encourage them to use their cubes or counting links to solve each problem independently. Monitor and assist as needed.
Differentiation
Support
- Provide number charts or number lines for students who struggle with counting.
- Work in smaller groups or pairs for those needing more direct instruction or reassurance.
Extension
- Challenge students to create their own addition word problems and solve them using manipulatives.
- Introduce simple subtraction word problems to extend their understanding of combining and removing quantities.
Assessment
Utilize the "Assessment Worksheet" included in the Worksheet Pack to evaluate each student's proficiency in solving addition word problems using manipulatives. The worksheet will contain a series of problems designed to test students' accuracy in counting and their understanding of the addition process. Review their answers to ensure they have correctly used the manipulatives to represent and solve each problem, demonstrating their grasp of combining numbers to find totals.
Review and closing
Gather students together to discuss common errors, such as miscounting cubes or misunderstanding the word problem. Address any misconceptions and answer any questions. Encourage students to share how using manipulatives helped them understand the addition process better.
Misconceptions
- Students may think that the larger number always goes first in an addition problem, irrespective of the story context.
- Some students might count the total number of objects present, not just the ones added, leading to incorrect totals.