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Fact Families Addition and Subtraction

Fact Families Addition and Subtraction. What Is a Fact Family?. Has four equations -two are add ition -two are subtract ion Only three members Can make up each equation Each equation must be true. How would you write this equation?. How many shells are there?.

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Fact Families Addition and Subtraction

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  1. Fact FamiliesAddition and Subtraction

  2. What Is a Fact Family? Has four equations -two are addition -two are subtraction Only three members Can make up each equation Each equation must be true

  3. How would you write this equation? How many shells are there? How many shells were added? 4 3 + 7

  4. How would you write this equation? How many shells are there? 7 How many were taken away? - 3 4

  5. 9 1+8=9 8+1=9 9-8=1 9-1=8 8 1 Is this a fact family? See fact family rules

  6. What Is a Fact Family? Has two equations -One is addition -One is subtraction Only three members Can make up each equation Each equation must be true Go back to problem

  7. What Is a Fact Family? Has two equations -One is addition -One is subtraction Only three members Can make up each equation Each equation must be true Go back to problem

  8. What Is a Fact Family? Has two equations -One is addition -One is subtraction Only three members Can make up each equation Each equation must be true Go back to problem

  9. What Is a Fact Family? Has two equations -One is addition -One is subtraction Only three members Can make up each equation Each equation must be true Go back to problem

  10. 8 What are the equations? - 1 7 Yes 8 + a this 1 7 Is 8-7=1 1-8=7 No Fact Family? 7+1=8 1+7=8 See fact family rules

  11. SORRY, try again Try again! Solve each equation

  12. YES! YOU ARE CORRECT!

  13. What are the equations? Is this a fact family? 4 4-1=3 4-3=1 3+1=4 1+3=4 1 3

  14. See fact family rules 11 1 10 Check each equation. Are they all true? Is this a fact family? 11-1=10 10+1=11 1-11=10 1+10=11 YES! NO!

  15. 1 7 8 8+1=9 7+1=8 8-7=1 8-1=7 What are the equations? Is this a fact family? See fact family rules

  16. YES! YOU ARE CORRECT!

  17. SORRY! Try Again. Try again! Solve each equation

  18. SORRY, try again Try again! Solve each equation

  19. YES! YOU ARE CORRECT!

  20. SORRY, try again Try again! Solve each equation

  21. YES! YOU ARE CORRECT!

  22. SORRY! Try Again. Go back to problem

  23. YES! YOU ARE CORRECT!

  24. ACTIVITY TIME! 10 Now it’s your turn to create your own fact family! This is what you do. . . • Draw and decorate your own house. • Pick 3 numbers that can make a true fact. • Write the true equations using your 3 numbers in windows or anywhere except the roof. 4 6 10-6=4 6+4=10 10-4=6 4+6=10 Click here for ideas

  25. LET’S PLAY GAMES! To play a game using fact families click here. Scroll down to “Learning Centers” and pick either the Dice Game, Card Game, or Domino Addition/Subtraction game To play a fact family game online click the starfish. You will need: Dice Game- 2 dice, paper, pencil Card Game- deck of cards, paper, pencil Domino-dominos, paper, pencil.

  26. Citations • Music found in Microsoft Power Point Clip Art media files • All photos found in Microsoft Power Point Clip Art files • Bubble sound found at FindSounds http://www.findsounds.com/ISAPI/search.dll • All other sounds found in Microsoft Power Point sound files • Ideas for house activity found at “Teaching Addition and Subtraction” http://www.busyteacherscafe.com/units/add_sub_unit.htm • Fact family self activities found at “Teaching Addition and Subtraction” http://www.busyteacherscafe.com/units/add_sub_unit.htm • Fact Family online activity found at EZSchool < http://www.ezschool.com/Games/G3-G6.html >

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