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Goals for the session

Goals for the session

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Goals for the session

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Presentation Transcript

  1. Goals for the session • Learn how the philosophical shift in the way we teach math affects the way we teach basic facts • Learn some effective strategies for teaching basic facts to students

  2. Alberta Program of Studies2007 By decreasing emphasis on rote calculation, drill and practice, and the size of numbers used in paper and pencil calculations, more time is available for concept development.

  3. Philosophical shift • Focus on number sense • Focus on mental math and estimation

  4. What do you think? Are basic facts important? Should we be having our students memorize them?

  5. The Nature of Mathematics Number Sense Rote Memory versus • committing isolated facts to memory one after another • drill and practice Automaticity • relies on thinking, using relationships among the facts • focusing on relationships

  6. Why is this a topic of interest? • The pendulum goes back and forth • The discussion about memorizing versus fluency

  7. What are the basic facts? The Alberta Program of Studies defines them as: • Addition and Subtraction to 18 • Multiplication and Division to 81

  8. The Power of Thinking Strategies

  9. Count On

  10. Count On • Doubles

  11. Count On • Doubles • Near Doubles

  12. Count On • Doubles • Near Doubles • Names of 10

  13. Count On • Doubles • Near Doubles • Names of 10 • Names of 5

  14. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies

  15. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies • Making 10

  16. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies • Making 10 • Skip count by 2

  17. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies • Making 10 • Skip count by 2 • Number in Middle

  18. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies • Making 10 • Skip count by 2 • Number in Middle • Commutativity

  19. Count On • Doubles • Near Doubles • Names of 10 • Nine strategies • Making 10 • Skip count by 2 • Number in Middle • Commutativity

  20. Your thoughts….

  21. Multiplication • Talk about ‘groups of ‘ • Talk about ‘families’ • Give strategies for when we don’t know what to do • There is NOT an endless supply of basic facts

  22. What do we already know? Start in grade 3 Learn up to 5 x 5

  23. Zero groups of

  24. Zero groups of • 1 group of

  25. Zero groups of • 1 group of • Counting by 5’s

  26. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s

  27. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • Doubles

  28. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • Doubles • Families

  29. Important to remember Teach through families 2 x 3 = 6 3 x 2 = 6 6 ÷ 3 = 2 6 ÷ 2 = 3 Work the teaching of division right into the teaching of the multiplication….

  30. Other strategies up to this point?

  31. So that is it for Grade 3 Let’s move on to grade 4…… Expand what they already know

  32. Zero groups of

  33. Zero groups of • 1 group of

  34. Zero groups of • 1 group of • Counting by 5’s

  35. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s

  36. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s

  37. A side note about tens • 10 X 6 • 100 X 7 • 1000 X 8 • 10 x 5 • 30 x 5 • 40 x 7

  38. Working with 9’s What do you know?

  39. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s

  40. 09 18 27 36 45 54 63 72 81 90

  41. The fours… • Relate the 4’s to the 2’s… • 2x1 • 2x2 4x1 • 2x3 • 2x4 4x2 – families here • 2x5 • 2x6 4x3 • 2x7 • 2x8 4x4 • 2x9 • 2x10 4x5

  42. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s • 4’s

  43. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s • 4’s

  44. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s • 4’s • Doubles

  45. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s • 4’s • Doubles • Families

  46. Zero groups of • 1 group of • Counting by 5’s • Counting by 2’s • 10’s • 9’s • 4’s • Doubles • Families

  47. Questions?