Adding Doubles

Learning Context

 

Purpose

The purpose of this lesson is to teach second grade students the concept of adding doubles.  The students learn that a number sentence with two of the same addends is known as a doubles fact.  The students grasp the concept of a doubles fact through SMART board technology.  New vocabulary words such as addends and doubles fact are also introduced.  In addition, the students apply their knowledge of double facts by completing a math worksheet with a variety of question formats.  Learning is enhanced through a doubles song and through real life application.  The students name items in their everyday life that exemplify a doubles fact.  For instance, students may name an egg carton, a pair of die, dominoes, and even themselves.  Last, this lesson integrates both mathematics and ELA Common Core Standards.  For instance, the second grade students add within 20 to solve a doubles fact.  In addition, the students must read to comprehend word problems in order to solve the given doubles fact. 

Goals

Learning Objectives

1.0 Students will understand that the addends are the same in a doubles fact with 100% accuracy.

1.1 Students will orally add doubles facts up to 20 using doubles fact song with 90%-100% accuracy.

1.2 Students will classify doubles facts from non-double facts on a SMART board activity with 90% -100% accuracy.

1.3 Students will add or subtract a doubles fact within 20 to find the missing part or sum by complete the Envision Math Worksheet.  90% -100% accuracy.

 

Enduring Understanding

A doubles fact is a number sentence with the same addends.

The sum of a doubles fact can always be separated into two equal part

 

Essential Question

How do patterns help you solve problems?

 

Overview of What Students Need to Know

Prior to Learning Experience:

Students have background on how to add two single-digit numbers.

Students know a plus sign means to add.

Students should know the answer to an addition problem is known as the sum.

Students have the knowledge  of some vocabulary words

Students know the rules and procedures of the classroom.

Students know the rules and procedures of the SMART board.

Students know how to write a number sentence

 

During and after the Implementation of the learning Experience:

Students have a better understanding of the words addends and doubles fact.

Students know how to write a doubles fact.

Students have a better understanding of the concept of a double.

Students are more aware of the adding doubles strategies.

Students become more fluent in reciting math facts.

 

Classroom Rules

1. Keep your hands, feet and materials to yourself.

 

2. Follow directions from the teacher the first time.

 

3. Raise your hand to be called on.

 

4. One friend speaks at a time.

               
    

 

Letter home

Dear Parent or Guardian,

            This week, we are starting topic two (2) from the EnVision Math program.  This topic entails several addition strategies including adding doubles.  It is essential for students to learn how to recognize patterns to help solve problems.  Furthermore, students are required to know from memory, the sum of two, single digit numbers.  Thus, we are looking forward to this doubles lesson.  
            Please encourage your son or daughter to find objects around the house that show doubles.  In addition, I have attached the doubles song lyrics we will be singing every day during morning news.  The consistency in school and at home will strengthen your child’s addition skills.
            Thank you for your cooperation! If you have any questions, problems or concerns, please feel free to contact Mrs. House and myself at dhouse@maryvaleschools.org

     Sincerely,

      Miss Cummings