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Techrichlessonone Techrichlessonone Presentation Transcript

  • Fruit Salad Subtraction
    Mathematics - Common Core State Standards - 
    1.1 - Students develop strategies for adding and subtracting whole numbers based on their prior
    work with small numbers.
    By: Melissa Pfluger
  • Story to activate prior knowledge to get children discussing subtraction
    How do we subtract?
    I
    There are 10 children on a bus and one gets off, there is one less now. How many children are left on the bus? What is the difference?
    Story to activate prior
    knowledge to get children
    discussing subtraction
    I
    I
    Manipulatives would be
    used here to show this
    same concept
    I
    I
    Now let’s get started learning subtraction!
  • Let’s start learning subtraction with Lollipop Dragon
  • HEART
    How many PEARS are hiding under the HEART if the total is 2?
  • How many PEARS are hiding under the HEART if the total is 2?
    2- 1=1
  • How many BANANAS are hiding under the STAR if the total is 5?
    STAR
  • How many BANANAS are hiding under the STAR if the total is 5?
    5-2=3
  • How many STRAWBERRIES are hiding under the OCTAGON if the total is 10?
    OCTAGON
  • How many STRAWBERRIES are hiding under the OCTAGON if the total is 10?
    10-3=7
  • How many BLUEBERRY branches are hiding under the RECTANGLE if the total is 6?
    RECTANGLE
  • How many BLUEBERRY branches are hiding under the RECTANGLE if the total is 6?
    6-4=2
  • How many ORANGES are hiding under the CIRCLE if the total is 9?
    circle
  • How many ORANGES are hiding under the CIRCLE if the total is 9?
    9-4=5
  • What do we have now?
    Fruit Salad!
  • LET’S CHECK OUT SOME GREAT SITES TO PRACTICE OUR SKILLS!
    http://www.gamequarium.com/subtraction.html
    http://www.coolmath4kids.com/subtraction/index.html
    http://www.softschools.com/math/games/fishing_sub.jsp
    http://www.fun4thebrain.com/subtraction.html
    http://www.aplusmath.com/flashcards/subtraction.html
  • LET’S DO SOME ASSESSING!
    http://www.math-drills.com/subtraction.shtml
    http://www.kidzone.ws/math/autumn/gr1-leavesminus.gif