# Lesson Plan: Insects (Math - Grade 1)

Subject:  Math

Lesson Objective: To use addition and subtraction to solve word problems

Common Core StandardCCSS.MATH.CONTENT.1.OA.A.2- Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Materials:

Starter:

Say:

• Why do we need to use addition?  (Allow the students to answer.)

Main:

Say:

• We use addition when we are putting numbers together.  Addition is used all of the time and you might not even know it!
• You might be outside catching bugs and putting them in a bug jar.  You caught 3 and then ate lunch.  After lunch, you caught 4 more.  You use addition when you add 3 and 4 together to figure out how many bugs you have now.
• Addition is an easier way to put numbers together.  You could count all of the bugs in your bug jar to figure out how many you have.  But, it is much faster to just add 3 and 4  (Write this problem on the board- 3 + 4= 7).
• There are a few ways that you can figure out addition problems if you do not just know them.
• For example, when you are adding 3+4, you could draw 3 circles representing the bugs and then 4 more representing the rest of the bugs.  You would then be able to count the circles to help you get the answer.
• Today, you are going to be solving word problems.
• To solve a word problem, you need to figure out what numbers you need to be adding.  You do this by reading the addition word problem.  The word problem will give you a scenario and there will be a question at the end that uses words such as all together or how many total.  This means that you should add.
• After you understand what you are supposed to do, you should write the addition problem down and draw a picture to help you solve the problem.  When you are done, we will go over all of the answers.
• Does anyone have any questions?

Feedback:

Say:

• Who would like to share your answers?  (Allow the students to share.)

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Written by Kimberly Greacen, Education World® Contributing Writer

Kimberly is an educator with extensive experience in curriculum writing and developing instructional materials to align with Common Core State Standards and Bloom's Taxonomy.