Reflection: Detectives are on the HUNT for Missing parts of 6 and 7! - Section 3: Independent Practice


The most common problem I ran into throughout the game was students placed what they knew that was outside the bowl in the wrong spot in the problem.  Check the resource section and view the example. If there were 2 outside the bowl and we knew we started with 7 then they needed to write 7-_=2.  But they wanted to write 7-2=_.  My goal was for them to identify finding a missing part of 7 and not just creating solving subtraction through separating a number.  My method for countering this issue was to continually walk around and check how the information was being recorded.  It was not a wide spread problem, just a few sets of partners.  If it had been a wide spread problem, I would have stopped the game and done another problem with them and drew a framework on the board for them to follow. However, next year I will model this explicitly for my class to see it from the beginning.

  Missing Part Student Mistake
Loading resource...

Detectives are on the HUNT for Missing parts of 6 and 7!

Unit 4: Understanding Subtraction
Lesson 1 of 10

Objective: SWBAT find the missing parts of 6 and 7 through subtraction.

Big Idea: Detectives it is time to search! The children will become great investigators and solve problems by finding the missing part.

  Print Lesson
Math, Number Sense and Operations, problem solving, subtraction, First Grade, take away
  70 minutes
reading nate the
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
Math Fact Sorting
1st Grade Math » Solving 3 Addend Problems
Big Idea: Students work to solve multiple 3 part number sentences and determine if they are equal or not! Students practice using less than, equal to and greater than language!
New Orleans, LA
Environment: Urban
Amanda Cole
How Many In My Hand?
1st Grade Math » Building Numbers
Big Idea: Today everyone becomes a magician as students are able to use a known starting number and one chunk (addend) of that known number, to determine the amount that is being hidden.
Waitsfield, VT
Environment: Suburban
Thomas Young
Something went wrong. See details for more info
Nothing to upload