# Lesson Plan: Hibernation (Math - Grade 3)

Subject:  Math

Lesson Objective: To use addition and subtraction to solve word problems involving time in regards to hibernation

Common Core StandardCCSS.MATH.CONTENT.3.MD.A.1- Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.

Materials:

Starter:

Say:

• What can you tell me about telling time?  (Allow the students to answer.)

Main:

Say:

• Today you are going to be solving word problems about time.  You will be using addition and subtraction to solve the problems.
• When solving problems about time, it is important to remember that there are 60 seconds in every minute, 60 minutes in every hour and there are 24 hours in every day.
• We also know that there are 7 days in a week.  Most months have either 30 and 31 days, except for February, which has 28.
• It is also important to remember to pay attention to the different words that are used in the word problem.
• Words like more than, together and increased will tell you to add.  Words like decreased, less than and difference will tell you to subtract.
• Now, you are going to be doing some word problems.  All of the word problems are about time and you will use either addition or subtraction to solve them.  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.