Reflection: Developing a Conceptual Understanding Finding the Hidden Addend - Section 4: Wrap Up


The counting on strategy is difficult for some first grade students (at this point in the year).  Encourage students to share and try out the strategy but realize that not all of the students will truly understand this concept in a meaningful way. When students shift from counting all to counting on, they must think about ideas such as: Where do I start counting? Where do I stop?  What's my answer?  Students are expected to model their thinking with mathematics (CCSS.Math.Practice.MP4).  The students are sharing their use of the counting on strategy as they model for the group.

  Reflection On Counting On
  Developing a Conceptual Understanding: Reflection On Counting On
Loading resource...

Finding the Hidden Addend

Unit 2: Working with Numbers, Operations, and Story Problems
Lesson 2 of 11

Objective: SWBAT solve a problem in which the total and one part are known. SWBAT represent their "action" with an equation.

Big Idea: CSI First Grade! Today your young investigators will try to find the missing addend while playing two different missing addend games.

  Print Lesson
36 teachers like this lesson
Math, Number Sense and Operations, Operations , 1st Grade, Counting on, missing addend, word problems
  70 minutes
lesson image
Similar Lessons
Identify Related Facts - Day 2 of 2
1st Grade Math » Single Digit Addition and Subtraction
Big Idea: It's all in the family! In this lesson, students will build fact family "houses" by using 3 numbers and writing the related addition and subtraction sentences.
Lakeland, FL
Environment: Urban
Lisa Murdock
On Your Mark...
1st Grade Math » What the WHAT?! Teaching Challenging Story Problems
Big Idea: The number line is a tool students will use in math from Kindergarten all the way through high school! This lesson has students explore how to model missing addend/subtrahend using the number line.
New Orleans, LA
Environment: Urban
Amanda Cole
Detectives are on the HUNT for Missing parts of 6 and 7!
1st Grade Math » Understanding Subtraction
Big Idea: Detectives it is time to search! The children will become great investigators and solve problems by finding the missing part.
Oklahoma City, OK
Environment: Urban
Jennifer Moon
Something went wrong. See details for more info
Nothing to upload